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【判断题】
正转接触器KM1和反转接触器KM2的主触点不可同时接通,否则会造成电源相间短路事故A.
正确
B.
错误
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【简答题】阅读理解。 Newspapers are very important in our everyday life. Many people begin their day by reading the paper. In this way they learn what is going on in the world. But sometimes they don't have the time...
【单选题】我国茅台酒的酒度为53度，是指()。
A.
每100克酒中含有纯酒精53克
B.
每100克酒中含有纯酒精53毫升
C.
每100毫升酒中含有纯酒精53毫升
D.
每100升酒中含有纯酒精53克
【单选题】听力原文：When will the opening ceremony begin? (A) It's eight o'clock. (B) There will be eight clocks. (C) It will begin at eight o'clock. (11)
A.
B.
C.
【简答题】阅读理解。 Newspapers are very important in our daily life. Many people begin their day by reading the paper. In this way they learn what is going on in the world. Sometimes, however, they didn't have the ...
【简答题】在一阶RC电路中,若C不变,R越大,则换路后过渡过程越 。
【单选题】听力原文：M: Will Dr. White's lecture begin at 1:40 or 2 o'clock? W: It would begin at 1:50 and finish in 2 hours. Q: When will the lecture begin? (9)
A.
At 1:40.
B.
At 1:50.
C.
At 2:00.
D.
At 3:50.
【单选题】中国茅台酒的酒度为 53 度,是指________。
A.
每 100 克酒中含有纯酒精 53 克
B.
每 100 克酒中含有纯酒精 53 毫升
C.
每 100 克酒中含有纯酒精 53 毫升
D.
每 100 毫升酒中含有纯酒精 53 克
【简答题】在一阶 RC电路中,若C不变,R越大,则换路后过渡过程越 。
【简答题】在一阶RC电路中,若C不变,R越大,则换路后过渡过程越 。
【简答题】当在一阶 RC 电路中,若 C 不变, R 越 小 ,则换路后过渡过程越 。
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