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【判断题】
三相半波可控整流电路的主要缺点是变压器二次电流含有直流分量,应用较少A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】半自动闭塞区间车站发出须由区间返回的路用列车时须报请列车调度员。发布命令改变行车闭塞方法列车占用区间的凭证为（）。
A.
路票
B.
调度命令
C.
出站信号机显示的进行信号
D.
绿色许可证
【单选题】Walk this street. You’ll find the school the park. [ ]
A.
down, in the front of
B.
along, in the front of
C.
along, in front of
D.
away,in front of
【简答题】属性窗口分为 4 个部分,这 4 个部分分别是 _______ 、 _______ 、 _______ 和 _______ 。
【简答题】昨天晚上朋友来了,没能复习。
【单选题】What aspect of the factories along the river does the professor mainly discuss?
A.
They'll be closed down.
B.
They're going to dismiss some of their employees.
C.
They'll be moved to other places.
D.
They have no money to build chemical treatment plants.
【单选题】She'll go______ anything her husband says just for a quiet and peaceful life.
A.
along with
B.
at
C.
against
D.
along
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