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【简答题】
若 接的三相电源绕组有一相不慎接反,就会在发电机绕组回路中出现 2U ,这将使发电机因 而烧损。
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皮皮学刷刷变学霸
举一反三
【单选题】We can see some apples _________ that tree and a nice bird _________that tree. [ ]
A.
on,in
B.
in,on
C.
in,in
【简答题】句型转换。 1．You can catch that bird. (改为否定句) ________ ________ ________ that bird. 2．There is some bread for her. (改为一般疑问句) ________ ________ ________ bread for her? 3．It's an old box. (改为一般疑问句) ________ ...
【简答题】We can see some bird.(一般疑问句) _____ _____ see _____ birds?
【单选题】We can see some apples _______ that tree and a nice bird ______ that tree.
A.
on; in
B.
in; on
C.
in; in
D.
on; on;
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