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【简答题】
正弦交流电路是指电路中的电压、电流均随时间 按 变化的电路
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举一反三
【简答题】A．She couldn't have left her notebook in the library. B．She may have put her notebook amid the journals. C．She should have made careful notes while doing reading. D．She shouldn't have read his notes w...
【简答题】He spoke in accordance with how he had learned.
【单选题】By the time he was seven he had learned _____ 2000 English words.
A.
as much as
B.
so much as
C.
as many as
D.
so many as
【简答题】建筑管道工程分类，按输送介质划分可分为：给水管道、（ ）等。
【单选题】-Why are you so late,Tom? -I was on half the way when it_________to me that I had left my notebook at home,so I had to fetch it. [ ]
A.
occurred
B.
hit
C.
happened
D.
reminded
【单选题】He had learned enough German to _____ a conversation. [ ]
A.
carry out with
B.
carry on
C.
continue on
D.
carry
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