Cse 120 - Homework#2 CSE120 Winter 2022 Solutions Instructions 1. The HW is to be written on physical pages; you may write it up in a word document as well if you prefer. However, in either case, the formulas and equations written/typed should be legible to the gra. Solutions available. CSE 120.

 
So I’m taking CSE 120 next Fall (2023) and i wanted to know which professor I should take. There’s 3, Millman, Goryll and Matar. For Goryll, there’s tons of positive reviews with people saying to just take him blindly. For Millman, he’s got 5.1/5 but there are people saying that the workload is intense. If you’ve had an experience .... Www etimesheets ihss gov

See full list on cseweb.ucsd.edu CSE 120 –Lecture 1 –Course Intro 15 How NotTo Pass CSE 120 •Do not attend lectures ♦ Lectures are redundant, the slides are online, and the material is in the book anyway ♦ Lecture material is the basis for exams and directly relates to the projects. Exams will cover materials only in lectures (not in slides or textbooks)!HowStuffWorks takes a look at the making of the 'Bluetiful' crayon. Advertisement Clothes, candy, cars ... they all come in just about every color of the rainbow. Even toddlers hav...Welcome to CSE 120, Principles of Operating Systems! Our first lecture is on Mon, Jan 9, 2023. Description This is an introductory course on the principles of operating systems. Topics include processes, scheduling, synchronization, memory management, virtual memory, file systems, I/O, protection, security, networking, and distributed systems.Are you a CSE (Computer Science and Engineering) student looking for an exciting mini project idea? Whether it’s for your coursework or to enhance your skills, choosing the right p...История Мангистау и города Актау. Сайт о всём что связанно с историей Мангистауской (Мангышлакской) области, города Актау (Шевченко), республики …高儀 切断 earth man cse-120 を詳しく知りたいならまずはココから!取扱説明書・よくあるご質問をはじめとしたメーカー提供情報と、レビュー記事・関連サイト・商品購入サイトを一覧できます。 Nath is pretty good at teaching 120. Last year when I took the class with him I stopped attending lectures after like week 3, relying on lecture notes and still pulled an A- in the class. Reply. Share. Naughty_Goat. • 1 mo. ago. I didn't even take cse 12, and I did fine in 120. His lectures are really boring, but it is easy to get a good ... Suppose you were implementing a counting semaphore in a new operating system for a mobile phone. Even though in CSE 120 you were told that counting semaphores were unbounded, you know that in practice there is a maximum value which will be imposed by the exact representation you use. In your case, the maximum value is 2^32.Here are some guidelines and tips for project 2 from previous CSE 120 TAs: Ryan Huang's tips; Matus Telgarsky's tips. Testing. As with all of the projects, it is your responsibility to implement your own tests to thoroughly exercise your code to ensure that it meets the requirements specified for each part of the project. Testing is an ...CSE 120 at LaGuardia Community College (CUNY) (LAGCC) in Long Island City, New York. This course will introduce students to the critical reading and evaluation of biographies, autobiographies, memoirs, diaries and journals. The aims of the course will be to: evaluate claims to truth and truthful recollections; examine historical claims through ...CSE 298. Internship Education Seminar (BACS) 0 Units Grading Basis: Pass/Fail Term Typically Offered: Fall, Spring Prerequisite(s): CSE 120, and CSE 130. Description: This is a zero credit hour required career development course that takes place before the first internship work term. For class offerings for a specific term, refer to the Schedule CSE 120 at LaGuardia Community College (CUNY) (LAGCC) in Long Island City, New York. This course will introduce students to the critical reading and evaluation of biographies, autobiographies, memoirs, diaries and journals. The aims of the course will be to: evaluate claims to truth and truthful recollections; examine historical claims through ... CSE 120: Homework #1 Solutions Fall 2023 For each of the three mechanisms that supports dual-mode operation — privileged instructions, memory protection, and timer interrupts — explain what might go wrong without that mechanism, assuming the system only had the other two. CSE 240 covers the different types of programming languages, like C/C++, Prolog, and Scheme. The emphasis on the class is C/C++, and future CS classes will mostly use C/C++. I highly recommend learning how to program in C and learning pointers before taking the class, it’ll help you get a head start. 15. Reply. The original Nachos paper (note that it describes the original Nachos project developed in C++) The platform we will officially support is Linux/x86 on the machines in the CSE B230–B270 labs and the ieng6 ACMS server cluster. We have customized the generic Nachos distribution for the CSE 120 class, so you should use the version of Nachos that ...So I’m taking CSE 120 next Fall (2023) and i wanted to know which professor I should take. There’s 3, Millman, Goryll and Matar. For Goryll, there’s tons of positive reviews with people saying to just take him blindly. For Millman, he’s got 5.1/5 but there are people saying that the workload is intense. If you’ve had an experience ...Course Number CSE 120. Course Title: Computer Science Principles. Offering [pilot]: Winter, 2011. Lectures [50 minutes]: Monday, Wednesday, Friday 12:30-1:20, LOW 216. …Digital Design Fundamentals (CSE 120) 57 57 documents. 0 0 questions 7 7 students. Follow this course Chat. Digital Design Fundamentals (CSE 120) Follow. Trending. 12. Lab2Template Altera online. Coursework 100% (5) 12. Lab2 Writeup - Lab 2 for CSE120. Other None. Lecture notes. Date Rating. year. Ratings. The rest of the number is not …Homework#2 CSE120 Winter 2022 Solutions Instructions 1. The HW is to be written on physical pages; you may write it up in a word document as well if you prefer. However, in either case, the formulas and equations written/typed should be legible to the gra. Solutions available. CSE 120.Digital Design Fundamentals (CSE 120) 57 57 documents. 0 0 questions 7 7 students. Follow this course Chat. Digital Design Fundamentals (CSE 120) Follow. Trending. 12. Lab2Template Altera online. Coursework 100% (5) 12. Lab2 Writeup - Lab 2 for CSE120. Other None. Lecture notes. Date Rating. year. Ratings. The rest of the number is not …Want to live forever? Here’s some advice from Bulletproof founder and author Dave Asprey. “We know that we can live to 120 years because we’ve seen it done...There’s a really good ...Suppose you were implementing a counting semaphore in a new operating system for a mobile phone. Even though in CSE 120 you were told that counting semaphores were unbounded, you know that in practice there is a maximum value which will be imposed by the exact representation you use. In your case, the maximum value is 2^32.After Google cut all but three of the projects at its in-house incubator Area 120 and shifted it to work on AI projects across Google, one of the legacy efforts — coincidentally al...Computer Architecture. CSE 120 - Computer Architecture - Spring 2020. Instructor: Scott Beamer. Lecture: TuTh 1:30-3:05p. Course materials on Canvas. Course discussion on Piazza. Frequently Asked Questions (about enrollment) Q: Is the course going online? A: Yes, but we prefer the term remote.September 29, 2022 CSE 120 – Lecture 3 – Processes 4. Process Components. • A process contains all state for a program in execution. ♦An address space. ♦The code for the executing program. ♦The data for the executing program. ♦An execution stack encapsulating the state of procedure calls. ♦The program counter (PC) indicating the ...CSE 120 - Computer Architecture - Fall 2020. Instructor: Sagnik Nath ([email protected]) Lecture: Mon Wed Fri 4:00 pm to 5:05 pm. Course materials on Canvas (link to be created shortly) Course discussion on Piazza (link to be created shortly) Recommended textbook (not compulsory for course) : Computer Organization and Design RISC-V Edition, 1st ...Here are some guidelines and tips for project 2 from previous CSE 120 TAs: Ryan Huang's tips; Matus Telgarsky's tips. Testing. As with all of the projects, it is your responsibility to implement your own tests to thoroughly exercise your code to ensure that it meets the requirements specified for each part of the project. Testing is an ...October 17, 2023 CSE 120 – Lecture 6 – Semaphores and Monitors 14. Bounded Buffer • Problem: There is a set of resource buffers shared by producer and consumer threads. ♦. Producer inserts resources into the buffer set » Output, disk blocks, memory pages, processes, etc. ♦. Consumer removes resources from the buffer setMake sure you stay on top of everything and don't get behind. Things start adding up and gets really easy to miss something or run out of time. Start on the software labs early. I found those to be the most time-consuming and most difficult things in the class.1947 Ford Models - The 1947 Ford models were little changed from 1946, and not all the changes were good. Learn more about the 1947 Ford models. Advertisement The factory-suggested...Step 3: Elli Feeds on Apples. Write a function apple() that draws a 40x40 red ellipse at the location ( appleX, appleY ). Note that you'll need to declare these variables at the top of your code, as usual. A simple ellipse will suffice, but feel free to draw a fancy apple if you'd like to. The apple should be assigned to a random location on ...Hilton has thousands of properties across the globe, but there are a few hotels that stand out as the best of the best. Hilton operates thousands of hotels in more than 120 countri...November 10, 2020 CSE 120 – Lecture 9 – Memory Management 14 Paging • Translating addresses ♦ Virtual address has two parts: virtual page number and offset ♦ Virtual page number (VPN) is an index into a page table ♦ Page table determines page frame number (PFN) ♦ Physical address is PFN::offset (“::” means concatenate ... We will be coordinating the projects across both sections of CSE 120 this quarter: Project page; Working in groups; Nachos API; Nachos Walkthrough. Exams The course has two exams, a midterm and a final. The midterm will cover the first half of the class, and the final will cover the material for the entire quarter. Below are sample exams to ... Undergraduate Courses. CSE 120: Computer Science Principles Introduces fundamental concepts of computer science and computational thinking.View Test prep - CSE 120- Practice Midterm.pdf from CSE 120 at University of California, San Diego. SAMPLE QUESTIONS FOR MIDTERM, WINTER 2017 (updated 1/31/17, 3:52PM) 1. The routine RestoreContext:This course covers the principles of operating systems. It emphasizes the basic concepts of OS kernel organization and structure, processes and threads, concurrency and synchronization, memory management, file systems, and communication. It is also a project course, providing essential experience in programming with concurrency, implementing ...CSE/EEE 120 Digital Design Fundamentals Spring 2021 . Course (Catalog) Description . Number systems, conversion methods, binary and complement arithmetic, Boolean …Unless things have changed from last year, each letter grade range is 15% instead of 10%. So 95% is an A+, 90% A, 85% A-, 80% B+, etc. He also gave us 3% extra credit for going to the MSI tutor and 2% for the majority of the class doing SETs at the end of the quarter, so a 5% boost in the grade. With 75% you could get a B+ in the class ...CSE/EEE 120: Digital Design Fundamentals Course and Faculty Information Course Description: Number systems, conversion methods, binary and complement arithmetic, Boolean algebra, circuit minimization, ROMs, PLAs, flipflops, synchronous sequential circuits. Credits: 3 Prerequisites: Degree-seeking student or visiting university studentCSE/EEE 120 Lab 3 Answer Sheet Registers, Counters and the "Brainless CPU" Name: Emilio Ramirez Date: 4/11/2020 Instructor/Time: Steve Millman: 9:00-10:15 (Tuesday/Thursday) Task 3-1: Build and Test a 4-Bit D Register with Enable Include a picture of your. Solutions available. CSE 120. Arizona State University.CSE/EEE 120 Lab 4 Answer Sheet The Complete Microprocessor. Name: Dhruv Bansal Instructor/Time: Dr. Steven Millman / T & Th (3:00 pm-4:15 pm) Date: 06 April 2023. Task 4-1: Build and Test the Memory-Address-Generation Circuit. Include a picture of …The AP CS Principles exam previously led to credit for CSE 120. We have renumbered CSE 120 to CSE 110 (though this will not show up in the course catalog for a few more months), so going forward the credit will be for CSE 110 instead, but the only difference is the course number.CSE 120 Final Exam. Get a hint. Binary to Decimal. Click the card to flip 👆. starting with the right most bit, multiply binary digits with powers of 2, starting with 2^0.Typical outlets in U.S. homes and businesses have a rating of 120 volts. Specialty outlets for larger items such as a stove, electric clothes dryer or a large-BTU air conditioner c...October 4, 2022 CSE 120 – Lecture 4 – Threads 15 Kernel Thread Limitations • Kernel-level threads make concurrency much cheaper than processes ♦ Much less state to allocate and initialize • However, for fine-grained concurrency, kernel-level threads still suffer from overhead ♦ Thread operations still require system calls CSE 120 Software Engineering Catalog Description: Building large software systems is hard, but experience shows that building large software systems that actually work is even harder. And trying to do all this before your competitors has proved fatal to many software projects. This course covers the principles of operating systems. It emphasizes the basic concepts of OS kernel organization and structure, processes and threads, concurrency and synchronization, memory management, file systems, and communication. It is also a project course, providing essential experience in programming with concurrency, implementing ... View Homework Help - CSE 120_Fall 2014 Homework #2 Solutions from CSE 120 at University of California, San Diego. CSE 120: Homework #2 Solutions 1 of. AI Homework Help. Expert Help. Study Resources. Log in Join. CSE 120 Fall 2014 Homework #2 Solutions - CSE 120: Homework... Doc Preview. Pages 7. Total views 100+ 12/7/2021 CSE 120: Principles of Computer Operating Systems Project 1: Threads Fall 2021 Due: Friday, October 22, at 11:59pm The baseline Nachos implementation has an incomplete thread system. In this project, your job is to complete it, and then use it t. Solutions available. Readers/Tutors needed for CSE 120 (computer architecture) and CSE12 (computer systems and assembly), Spring 2023 Please apply ASAP at https://rta.soe.ucsc.edu/ The minimum criteria for applying are having taken the specified course and having obtained a minimum of B-CSE 120: Homework #2. For the homework questions below, if you believe that you cannot answer a question without making some assumptions, state those assumptions in your answer. The Intel x86 instruction set architecture provides an atomic instruction called XCHG for implementing synchronization primitives.Remaining disk blocks used to store files (and dirs) ♦ There are many ways to do this. File System Layout. Partition it into fixed-size file system blocks. Typically 4KB in size. ♦ Block size set when file system is formatted. Independent of disk physical sector size.CSE 120: Principles of Operating Systems (Winter 2019) Lecture and Discussion Times Section A Lectures: Mon/Wed 5:00-6:20, CENTR 115 Section B Lectures: Mon/Wed 6:30-7:50, CENTR 115 Section A Discussion: Fri 6:00-6:50p, PCYNH 106 Section B Discussion: Fri 7:00-7:50p, PCYNH 106 Instructor. Joseph Pasquale. Teaching Assistants. Ujwal …So I’m taking CSE 120 next Fall (2023) and i wanted to know which professor I should take. There’s 3, Millman, Goryll and Matar. For Goryll, there’s tons of positive reviews with people saying to just take him blindly. For Millman, he’s got 5.1/5 but there are people saying that the workload is intense. If you’ve had an experience ...CSE 120 Final Exam. Get a hint. Binary to Decimal. Click the card to flip 👆. starting with the right most bit, multiply binary digits with powers of 2, starting with 2^0.CSE120: Computer Science Principles. Catalog Description: Introduces fundamental concepts of computer science and computational thinking. Includes logical reasoning, problem solving, data representation, abstraction, the creation of “digital artifacts” such as Web pages and programs, managing complexity, operation of computers and networks, effective Web searching, ethical, legal and ...CSE120: Computer Science Principles. Catalog Description: Introduces fundamental concepts of computer science and computational thinking. Includes logical reasoning, problem solving, data representation, abstraction, the creation of “digital artifacts” such as Web pages and programs, managing complexity, operation of computers and networks, …CSE 120 – Lecture 12: Demand Paging 3 A working set of a process is used to model the dynamic locality of its memory usage Defined by Peter Denning in 60s Definition WS(t,w) = {pages P such that P was referenced in the time interval (t, t-w)} t – time, w – working set window (measured in page refs) A page is in the working set (WS) only if it was Course Description. Introduces fundamental concepts of computer science and computational thinking. Includes logical reasoning, problem solving, data representation, abstraction, the creation of “digital artifacts” such as Web pages and programs, managing complexity, operation of computers and networks, effective Web searching, ethical ... October 28, 2023 CSE 120 – Midterm Review 3. Midterm • Covers material through scheduling • Based upon lecture material, homeworks, and project • One 8.5”x11” double-sided sheet of notes. ♦. Can be typed or hand- written. ♦. One sheet of paper (no stacked post -its, etc.) • Obligatory: Please, do not cheat. ♦ CSE 120 –Lecture 1 –Course Intro 15 How NotTo Pass CSE 120 •Do not attend lectures ♦ Lectures are redundant, the slides are online, and the material is in the book anyway ♦ Lecture material is the basis for exams and directly relates to the projects. Exams will cover materials only in lectures (not in slides or textbooks)! CSE/EEE 120 Lab 3 Answer Sheet Registers, Counters and the "Brainless CPU" Name: Emilio Ramirez Date: 4/11/2020 Instructor/Time: Steve Millman: 9:00-10:15 (Tuesday/Thursday) Task 3-1: Build and Test a 4-Bit D Register with Enable Include a picture of your. Solutions available. CSE 120. Arizona State University.a) Set value of timer. b) Read the clock. c) Clear memory. d) Turn off interrupts. e) Switch from user to monitor mode. Set value of timer: Yes, otherwise the user program can manipulate it such that the OS never gains control. Read the Clock: No, as a user can't really do anything harmful by simply reading the clock.CSE 120. Computer Architecture. Introduction to computer architecture including examples of current approaches and the effect of technology and software. Computer performance evaluation, basic combinatorial and sequential digital components, different instruction set architectures with a focus on the MIPS ISA and RISC paradigm.CSE 120 would be with Nath and 101 would be with Tantalo. Locked post. New comments cannot be posted. Share Sort by: Best. Open comment sort options Best; Top; New ...December 6, 2023 CSE 120 – Final Review 5. Final Mechanics • Tue Dec 12 8–11am in MOS 0113 • Most of the final covers material after the midterm. ♦. Lectures Nov 2 – Nov 28: VM, file systems, protection. ♦. Projects 2 & 3, Homeworks 3 & 4 • Some material on concurrency, synchronization. ♦. Synch primitives, synch problems November 18, 2020 CSE 120 – Lecture 11 – Page Replacement 10 Belady’s Algorithm • Belady’s algorithm is known as the optimal page replacement algorithm because it has the lowest fault rate for any page reference stream ♦ Idea: Replace the page that will not be used for the longest time in the future ♦ Problem: Have to predict the ... CSE120: Computer Science Principles. Catalog Description: Introduces fundamental concepts of computer science and computational thinking. October 28, 2023 CSE 120 – Midterm Review 3. Midterm • Covers material through scheduling • Based upon lecture material, homeworks, and project • One 8.5”x11” double-sided sheet of notes. ♦. Can be typed or hand- written. ♦. One sheet of paper (no stacked post -its, etc.) • Obligatory: Please, do not cheat. ♦CSE 120: Homework #4 Solutions. ... requiring 5120 bytes on disk to store the file and reducing internal fragmentation to just 120 bytes. The tradeoff is that managing fragments increases the complexity of the file system implementation. My laptop has 2 20 files on it. Assume the disk block size is 4KB and the average amount of internal ... CSE 120 –Lecture 1 –Course Intro 15 How NotTo Pass CSE 120 •Do not attend lectures ♦ Lectures are redundant, the slides are online, and the material is in the book anyway ♦ Lecture material is the basis for exams and directly relates to the projects. Exams will cover materials only in lectures (not in slides or textbooks)! This course covers the principles of operating systems. It emphasizes the basic concepts of OS kernel organization and structure, processes and threads, concurrency and synchronization, memory management, file systems, and communication. It is also a project course, providing essential experience in programming with concurrency, implementing ... The bank was established in modern-day Lahore, Pakistan, in 1895. Like many from the post-Partition generation of the Indian subcontinent, the Punjab National Bank (PNB) has been a...November 27, 2023 CSE 120 – Lecture 14 – Protection 16. Protection Model • More formally… ♦. Objects are “what”, subjects are “who”, actions are “how” ♦. Logging in determines the subject (“who”) ♦. Objects in the file system are the “what” (also processes) ♦. Permissions are the actions (“how”)First, you will implement demand paging using page faults to dynamically initialize process virtual pages on demand, rather than initializing page frames for each process in advance at exec time as you did in project 2. Next, you will implement page replacement, enabling your kernel to evict a virtual page from memory to free up a physical page ... This is an introductory course on the principles of operating systems. Topics include processes, scheduling, synchronization, memory management, virtual memory, file systems, I/O, protection, security, networking, and distributed systems. There is a significant systems programming component to the course, where students are required to design ... These leaf index blocks each contain 1K pointers to data blocks. So, the double-indirect pointer indirectly points to 1K * 1K * 4K = 4G (2 10 * 2 10 * 2 12 = 2 32 bytes). Adding everything up, the maximum file size is 40K + 4M + 4G. The original Berkeley Fast File System increased the Unix file system block size from 512 bytes to 4096 bytes.October 1, 2015 CSE 120 –Lecture 3 –Processes 4 Process Components A process contains all state for a program in execution An address space The code for the executing program The data for the executing program An execution stack encapsulating the state of procedure calls The program counter (PC) indicating the next instruction A set of general …

CSE 120: Nachos VM Worksheet Solutions. In Project #2, part 2, you will be creating and initializing the page tables used by user-level processes running on Nachos. This worksheet is intended to give you practice with Nachos page tables so that you are comfortable understanding how virtual memory works in Nachos.. Pet pantry of lancaster county

cse 120

What do you think of GE’s BULLETIN series? We’re running a short, 30-second survey – click here to take it. What do you think of GE’s BULLETIN series? We’re running a short, 30-sec...CSE 120: Principles of Computer Operating Systems Fall 2019. Instructor Geoffrey M. Voelker ([email protected]) CSE 3108 Lectures Tu/Th 8–9:20am Center Hall 119 ... CSE basement Textbook. Remzi H. Arpaci-Dusseau and Andrea C. Arpaci-Dusseau Operating Systems: Three Easy Pieces Version 1.00 (Available free online!) Discussion …October 1, 2019 CSE 120 –Lecture 2 –Architectural Support for OSes 6 I/O Completion •Interrupts are the basis for asynchronous I/O ♦ OS initiates I/O ♦ Device operates independently of rest of machine ♦ Device sends an interrupt signal to CPU when done ♦ OS maintains a vector table containing a list of addresses of kernel routines to handle …CSE 120 Syllabus. This course covers the principles of operating systems. It emphasizes the basic concepts of OS kernel organization and structure, processes and threads, concurrency and synchronization, memory management, file systems, and communication. It is also a project course, providing essential experience in programming with ...Lab 2 for CSE120 120 lab answer sheet multiplexers, decoders and the arithmetic and logic unit (alu) name: sherwin vasileska mon date: task build and testKnowing the mechanisms behind networks is super useful IMO since it helps you to understand a lot of the how and why behind the internet and a lot of apps and protocols we use every day, and it's extremely interesting. 124. This is the class that focuses on the application layer of the networking stack. Nath is pretty good at teaching 120. Last year when I took the class with him I stopped attending lectures after like week 3, relying on lecture notes and still pulled an A- in the class. Reply. Share. Naughty_Goat. • 1 mo. ago. I didn't even take cse 12, and I did fine in 120. His lectures are really boring, but it is easy to get a good ... China has joined the more than 120 countries banning single-use plastics. HowStuffWorks breaks down what these are and if banning them is necessary. Advertisement In early January ...Lab 2 for CSE120 120 lab answer sheet multiplexers, decoders and the arithmetic and logic unit (alu) name: sherwin vasileska mon date: task build and testCSE 120: Software Engineering. Units: 4 Teams work on approved design projects or on software teams. Through these projects, students will practice design methodology and learn modern software engineering techniques to create reliable, efficient, reusable, and maintainable software systems using various design process models.Canvas Group Name: Student 1: Student 2: CSE120 HA2 Solution: Human Compiler Due Date: Tuesday 10/19/21 Given below is a C code snippet that computes a reduction of a vector consisting of byte-sized values residing in main memory. Note the type (uint8_t =. Solutions available. CSE 120. University of California, Santa Cruz.CSE 120 –Lecture 1 –Course Intro 15 How NotTo Pass CSE 120 •Do not attend lectures ♦ Lectures are redundant, the slides are online, and the material is in the book anyway ♦ Lecture material is the basis for exams and directly relates to the projects. Exams will cover materials only in lectures (not in slides or textbooks)!CSE 120 Nachos Project 2: Multiprogramming Fall 2004 Due: November 19, 2004 at Midnight The second phase of Nachos is to support multiprogramming. As in the first assignment, we give you some of the code you need and your job is to complete the system and enhance it.安全ロックボタン付き. 用途. 丸太・角材など木材の切断. 薪切り作業. 電源 (V) AC100 電流 (A) 8.5 定格消費電力 (W) 800 コード長さ (m) 約2 切断能力 (mm)木工 350 対応材質 木工用 周波数 (Hz) 50/60 質量 (kg) 約3.2 付属品 チェーンカバー、チェーンソーオイル (約100ml ....

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