Muốn tăng áp suất lên diện tích bị ép ta có thể làm như thế nào ?
A: Giảm áp lực lên diện tích bị ép.
B: Tăng áp lực và giảm diện tích bị ép.
C: Tăng diện tích bị ép.
D: Tăng áp lực và tăng diện tích bị ép lên cùng một số lần.
Đáp án:
B
Giải thích các bước giải:
⇒Tăng áp lực và giảm diện tích bị ép.
Combine each pairs of these sentences, using SO...THAT and SUCH...THAT 1. He was given a lot of work to do. He protested 2. He had so many books to read. He didn’t find time for his hobby 3. There were many people in the theater. I couldn’t find the seat 4. I had a lot of trouble with my schoolwork. I had to ask for help 5. There were many people in the hall. We couldn’t see Professor Taylor 6. The tornado struck with great force. It lifted automobiles off the ground 7. Grandpa help me tightly when he hugged me. I couldn’t breathe for a moment
V.Give correct form of the verbs in brackets 1.David and his father( visit)________ the Temple of Liter last week. 2. THE University of Cambridge( form) _____ in 1209.It always ( consider) ______ to be one of the most prestigious universities in the world. 3. My sister (study) _______lawbat Viet Nam National University,Ho Chi Minh City now. THIS university ( situate)_________ in Thu Duc District. 4. I think this institution ( widen) ________ twice since 1999
Nhận xét về nghệ thuật bài thơ Sang thu - Hữu Thỉnh?
Giúp mk vs mk đang cần gấp . Mk cảm ơn nhiều nha
16:03 Cho sabcd đáy hình vuông cạnh a căn 2 . Sab là tam giác đều nằm trong mp vuông góc với đá y tính kcach từ ab đến sd
Giúp mk với các bạn mk đang cần gấp Cẩm ơn trước
Làm hộ mik nha mik cảm ơn nhiều
xét dấu các tam thức bậc hai 3x^2-2x+1
tính các tổng sau một cách hợp lí. a,2075+37-2076-47. b,34+35+36+37-14-15-16-17 c,-7624+(1543+7624). đồ,(27-514)-(486-73)
Ai giúp được câu nào thì giúp mik nha , k càn lm hết đau ! Exercise 1: Put the verbs in brackets. Present simple or present continuous. 1. I (not/belong) ............................... to this particular government committee. 2. Hurry? The bus (come) ............................... (not/want) ................................ to miss it. 3. Martha is a vegetarian. She (not/eat) ............................... meat. 4. I (look) ............................... for the manager. I can ’t find him anywhere. 5. We are successful because we (take) .................................... the time to talk to our customers. 6. John (deaf) ............................... with all the enquiries about sales. 7. At the moment we (make) ............................... a training video for Siemens. 8. (you/know) ............................... what Mr. Brown is doing? He is not in his office. 9. Unemployment (fail) ............................... and is now down to 5.6%. 10. Jane is doing some research in the library. She needs it for a book she (write) ............................... Exercise 2: Put the verbs in brackets: Present perfect or present perfect progressive. (1) 1. How long (you/ know) ......................................... Gerry? 2. You look dirty. What (you/ do) ......................................... all day? 3. How many times (Charles/ visit) ......................................... New York? 4. She (learn) ......................................... French words for hours, but she still doesn’t remember all of them. 5. The children (watch) ......................................... videos for two hours. 6. (he/ study) ......................................... hard today? 7. Sorry, I’m late, (you/ wait) ......................................... for long? 8. We (not/ see) ......................................... Lisa recently. 9. He (write) ......................................... his essay all day, but he hasn’t finished yet. 10. How long (he/ wait) ......................................... for her? Exercise 3: Put the verbs in brackets: Present perfect or present perfect progressive. (2) 1. You took tired. (you/study) ......................................... hard? 2. Mr. Brown is new here, isn’t he? How long (he/work) ......................................... for the company? 3. I (lose) ......................................... my wallet. Have you seen it anywhere? 4. I (read) ......................................... the magazine you lent me, but I (not/finish) ......................................... yet. 5. (you/hear) ................................... the bad news? Simon (break) ................................... his leg! 6. John (write) ................................... his novel since last year. He ................................... the first three chapters. 7. What (you/do) ........................................ I (wait) ........................................ for you for an hour. 8. The painters (paint) ......................................... the town hall since February. They ......................................... (paint) nearly half of it now. 9. I (know) ......................................... Louise for ten years. 10. Mr. Brown (mark) ........................................ the exams all morning, but he (not/read) ........................................ them all.
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