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【单选题】
What class is the following phrase? the author’s new novel that will soon come outA.
Noun phrase
B.
Verb phrase
C.
Adjective phrase
D.
Adverb phrase
E.
Prepositioal phrase
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反馈参考答案：
举一反三
【多选题】避雷器F3属于车内避雷器，并联于（）和（）之间，它主要抑制主断路器开闭时产生的操作过电压，避免对机车内部的控制电器产生过电压侵害。
A.
主断路器
B.
主变压器原边绕组
C.
主变压器次边绕组
D.
主变压器
【简答题】DDR400的物理工作频率为__________。(注意要写单位)
【单选题】Not until he retired from teaching three years ago ________having a holiday abroad. (2012·辽宁，32)
A.
he had considered
B.
had he considered
C.
he considered
D.
did he consider
【简答题】A．The train is faster than the bus. B．There are two buses every day. C．The bus is cheaper than the train. D．The train is cheaper than the bus.
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