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【单选题】
为求含有分支的管路系统需要的输送动力，需要列多个机械能算式，求出若干个动力。如这些动力确定真正需要的动力？（）A.
取其中最大者；
B.
取其平均值；
C.
取其加和；
D.
取其中最小者。
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举一反三
【简答题】阅读理解。 Long ago there was a little boy who wanted to be a soldier, but none of his brothers and sisters did. Later he went to a military (军事) school and studied very hard. When he was less than eightee...
【简答题】疾病发展的一般规律
【单选题】Sir, you ask me what I think of the expedition to China. You must feel that it was praiseworthy, well done. You are very polite, putting a high premium upon my feelings. In your opinion, the expeditio...
A.
humorous
B.
pitiful
C.
sarcastic
D.
eulogistic
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