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【简答题】
  选择合适的短语填空 by the time feel like get on/off head for instead of in the end pull over result in tap (sb.) on the shoulder turn out ( all right ) 1. I ran to the railway station as fast as I could but found the train was almost full by the time I . 2. Having finished his work ahead of time, Philip was happy to leave his office and the airport to enjoy his holiday. 3. You should have seen Boris’s face when Max him . How surprised he was at the moment. 4. When a policeman saw the bus driver running a red light, he called to him to and walked towards the bus. 5. His poor English has misunderstandings between him and his American boss. 6. What a lovely day it is! Do you a walk along the mountain path? 7. we got to the bus stop, the last bus had already left. 8. Though there were quite a few difficulties, I was sure that things were going to . 9. At the meeting, there were many different suggestions for our holiday, but we decided to take George’s suggestion and went to the seaside again. 10. I can’t understand why they chose him you—you can do the job much better than he.
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【判断题】A1类施工作业在设置防护时,车站和施工单位均要设置防护
A.
正确
B.
错误
【单选题】用平行于斜面的力使静止的质量为m的物体在倾角为α的光滑斜面上,由底端向顶端做匀加速运动,当物体运动到斜面中点时,去掉外力,物体刚好到达顶点,则外力的大小( )
A.
2mg(1-sinα)
B.
2mgsinα
C.
2mgcosα
D.
2mg(1+sinα)
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A.
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B.
经济发展
C.
幼儿的身心特征
D.
环境
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正确
B.
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A.
汽水管道
B.
安全附件
C.
辅机设备
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A.
正确
B.
错误
【单选题】电路如图3所示,电路 的时间常数 为( )。 图3
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3s
B.
6s
C.
9s
D.
-9s
【单选题】电路如图所示,则电路的时间常数为:()
A.
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B.
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C.
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