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【单选题】
隔离开关最主要的作用是()。A.
A进行倒闸操作;
B.
B切断电气设备;
C.
C使检修设备和带电设备隔离;
D.
D切断故障电流
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【简答题】If you want to teach your children how to say sorry, you must be good at saying it yourself, especially to your own children. But how you say it can be quite tricky. If you say to your children “I’m s...
【简答题】阅读理解。 If you want to teach your children how to say sorry, you must be good at saying it yourself, especially to your own children. But how you say it can be quite tricky . If you say to your children...
【简答题】机械碾压路基工程,一级路,查 12-15t光轮压路机定额为:9.84台班/1000m 3 实体,则 12-15t光轮压路机的机械台班产量定额为( )。 A . 0.198 ( 1000m 3 /台班 ) B . 0.102 ( 1000m 3 /台班 ) C . 9.84 (台班 /1000m 3 ) D. 984 (台班 /1000m 3 )
【简答题】停止等待的意思是什么?
【单选题】You want to say Goodbye to somebody, which is your choice ?
A.
see you later
B.
Nice to meet you
C.
very good
D.
wonderful
【判断题】( )规定负载功率与网络的 的比值为网络的效率,用η表示,则 ,R L =R 0 ,即网络输出最大功率时的效率只为50%,当负载电阻R L 》R 0 时,电力系统中电源传输电的效率才比较高。
A.
正确
B.
错误
【简答题】If you want to have a good reputation, you have to be _____and do what you say you'll do.
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