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【单选题】
在故障分析时,对变压器,以下说法不正确的是( )A.
变压器的正序、负序和零序的等效电阻相等
B.
变压器的正序、负序和零序的等效漏抗也相等
C.
变压器是一种静止元件
D.
变压器的正序。负序、零序等效电路与外电路的连接方式相同
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反馈参考答案：
举一反三
【简答题】学生进老师的办公室时,应先敲门,经老师( )后方可进入。.在老师的工作、生活场所,不能随便翻动老师的物品。
【单选题】The boy went in _______ when he left for school that he left his key inside the house.
A.
a rush so anxious
B.
a such anxious rush
C.
so an anxious rush
D.
such an anxious rush
【单选题】Who would replace James when he left?
A.
Old Daniel.
B.
Little Joe Green.
C.
The master's relative.
【单选题】He English for twelve years when he left for Australia.
A.
studies
B.
studied
C.
has studied
D.
had studied
【单选题】He began to take political science only when he left school. [ ]
A.
strictly
B.
truly
C.
carefully
D.
seriously
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