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【单选题】
泵有效功率是 300w ,效率是 70% ,则实际功率为?A.
201W
B.
210W
C.
492W
D.
429W
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举一反三
【简答题】The enemy of memory is forgetting. To i mprov e memory is to avoid and overcome forgetting as much as possible. In learning activities, as long as we practice consciously and the rules and meth...
【简答题】Seven Tips for Writing an Effective Materials and Methods Section in Your Research Manuscript 1. Begin writing the Materials and Methods w_____ you are performing your experiments.Writing during the r...
【单选题】He couldn’t _______ his money to the end of the month.
A.
drop in
B.
fend off
C.
stretch out
D.
vary with
【判断题】When the writer thinks of some chores to be done, she usually writes them down to avoid forgetting them.
A.
正确
B.
错误
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