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【判断题】
低压电器是指工作在交流额定电压1200V以下,直流额定电压1500V以下,用于对电路进行接通、分断,对电路参数进行变换,以实现对电路或用电设备的切换、控制、保护、检测、变换和调节作用的设备或元件。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Everyone has right to express himself, __________?
A.
hasn't he
B.
has he
C.
don't they
D.
do they
【简答题】重力坝的泄水孔按其作用分为 、 、 、 、灌溉孔和放水孔。按水流的流态可分为 、 。
【单选题】特定引导的进站(或进路)信号机前,列车运行速度低于( )km/h时,允许司机顺序按压【开车】键、【解锁】键解除对该信号机的停车控制功能。
A.
30
B.
40
C.
60
【单选题】Everyone has the right to live where he wants to, ______ the color of his skin.
A.
in spite of
B.
with respect to
C.
in terms of
D.
regardless of
【单选题】Which of the following statements is TRUE, according to the author?
A.
Everyone has a right to hold his own opinion.
B.
Free expression of opinions often leads to confusion.
C.
Most people tend to be careless in forming their opinion.
D.
Casual use of the word 'opinion' often brings about quarrels.
【简答题】Everyone has the right to live where he/she wants to, _____________ (不管其肤色如何).
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