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【多选题】
测量三相电路的有功功率的方法有
A.
“一瓦特计”法
B.
“二瓦特计”法
C.
“三瓦特计”法
D.
直接三相功率表法
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【简答题】Somebody says ,‘‘Time is money.” But I think time is important than money. Why do I think so? Because when money is over, we can get it back. But when time is it’ll never .That’s we shouldn’t waste ti...
【单选题】For young children,getting dressed is a complicated business.
A.
strange
B.
complex
C.
personal
D.
funny
【简答题】一月 n. J_ _ _ _ _ _
【简答题】John works in the London Home for Lost Dogs. When dogs get lost in London, policemen and other people bring them to John. When somebody loses his dog he comes to the Dogs' Home, and usually the dog ...
【多选题】对于朗肯循环,提高初压________。
A.
循环热效率减小;
B.
循环热效率增大;
C.
汽轮机内部效率降低;
D.
汽轮机内部效率提高;
【多选题】对于朗肯循环,提高初压 ________ 。
A.
汽轮机内部效率提高
B.
汽轮机内部效率降低;
C.
循环热效率增大
D.
循环热效率减小;
【单选题】The naughty boy has cried wolf time and again. Hardly ______ believes him when he says he really is in trouble.
A.
nobody
B.
somebody
C.
some one
D.
anybody
【多选题】对于朗肯循环,提高初压( )。
A.
汽轮机内部效率降低
B.
循环热效率减小;
C.
循环热效率增大
D.
汽轮机内部效率提高
【多选题】对于朗肯循环,提高初压________。
A.
循环热效率减小;
B.
汽轮机内部效率提高;
C.
循环热效率增大;
D.
汽轮机内部效率降低;
【简答题】喷气式飞机 n. j_ _
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