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【单选题】
下列说法中,正确的是( )。A.
行程开关的作用是将机械行走的长度用电信号传出
B.
热继电器是利用双金属片受热弯曲而推动触点动作的一种保护器，它主要用于线路 的速断保护
C.
中间继电器实际上是一种动作与释放值可调节的电压继电器
D.
电动式时间继电器的延时时间不受电源电压波动及环境温度变化的影响
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【简答题】我国审计署属于( )级别的审计机关。
【单选题】--Our class won the English speaking contest. --Congratulations! You________ be very proud of it.
A.
can
B.
would
C.
must
【单选题】—Our class has won the fist place in the basketball match organized by YCBA. —__________! [ ] A. My God
B.
What a shame
C.
Congratulations
D.
Have a good time
【单选题】–Our class won the first prize in the sports meeting. --- .
A.
Thanks
B.
Congratulations
C.
Good luck
D.
Have fun
【单选题】Our class won a medal and the presentation ________on Thursday afternoon.
A.
was happened
B.
was taken place
C.
was held
D.
were on
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