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【简答题】
常用继电器按动作原理分为四种类型：（）、感应型、电动型、（）。
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反馈参考答案：
举一反三
【单选题】All flights because of the snowstorm ,many passengers could do nothing but wait.
A.
had been cancelled
B.
were cancelled
C.
have been cancelled
D.
having been cancelled
【单选题】All flights ___ because of the snowstorm, many passengers could do nothing but take the train. A. were canceled B. having been canceled C. had been canceled D. have been canceled
A.
选择1
B.
选择2
C.
选择3
D.
选择4
【简答题】IP地址分为几类?其中常用的三类IP地址的第一个字节的数分别是多少?
【简答题】The (1) find an interesting solution to one of the problems: garden chairs. With the chairs to (2) in, some passengers are finding new ways to (3) . Inside Terminal 1, it's late at night, after (4) . ...
【单选题】利达说：“我的祖国是一个文明古国。在那儿，美丽的泰姬陵静静地矗立在南亚的艳阳下，悠悠恒河水缓缓流淌而过。”你认为利达的祖国是
A.
埃及
B.
希腊
C.
印度
D.
伊拉克
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