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【简答题】
电路如题72图所示,有三个电容器,电容 C 1 :4μF/耐压15V,电容 C 2 :12μF/耐压10V,电容 C 3 :6μF/耐压30V,则该电容器组相当于一个标称值为 的电容器。
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举一反三
【单选题】How old was the “supposed” Hollis Maynell ? ________.
A.
Over 20
B.
Over 30
C.
Over 40 Over 40
D.
Over 50
【简答题】How old was Ushi the last time the writer of the passage visited her?
【单选题】Read Part 3 carefully and choose the best answer for each question. How old was the “supposed” Hollis Maynell? ________.
A.
Over 20
B.
Over 30
C.
Over 40
D.
Over 50
【简答题】听对话，回答问题。 1. How old was the woman when she started to study English? A. Six. B. Eight. C. Ten. 2. What does the woman think of English studying? A. Interesting. B. Useful. C. Difficult. 3. What does ...
【简答题】(1) Did you find out ______? A. she was looking for whose child B. whose child was she looking for C. whose child she is looking for D. whose child she was looking for (2) Are you interested ...
【简答题】听短文，选答案。 1. How old was David when he went to the middle school? A. 12 B. 13 C. 14 2. When he was in the first y ear of middle school, David always __ . A. took the bus to school. B. went to school by...
【简答题】根据听到的短文内容，选择正确答案。 1. How old was the boy? [ ] A. Four. B. Six. C. Five. 2. How many tickets did the woman buy at first? [ ] A. One and a half tickets. B. Only one ticket. C. Two tickets. 3. Wh...
【单选题】假设某厂需要零件甲,其外购单价为10元,若自行生产,每单位变动成本为6元,且需要为此每年追加10000元的固定成本,通过计算可知,当该零件的年需要量为( )件时,两种方案等效。
A.
2500
B.
3000
C.
2000
D.
1800
【单选题】How old was the “supposed” Hollis Maynell? ________.
A.
Over 20
B.
Over 30
C.
Over 40
D.
Over 50
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