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【单选题】
达到隐蔽工程的条件后,施工单位应提前多少小时通知监理项目部赴复验?A.
12
B.
24
C.
48
D.
72
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【单选题】She was an _____ example to her followers.
A.
interesting
B.
inspiring
C.
introverted
D.
in-depth
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【简答题】Dongfang Hotel is a four-star hotel. It is located in the centre of the city, with a parking lot for 150 cars. The 650 rooms are of international first-class standard. They are well furnished with fu...
【简答题】三相交流异步电动机的铭牌如下图所示, ( 1 )请计算出:磁极对数 P 、转差率 S 。 ( 2 )说明以下标示的含义:工作制 S1 、防护等级 IP44 、 B 级绝缘。
【简答题】Dongfang Hotel is a four-star hotel. It is located in the centre of the city, with a parking lot for 150 cars. The 650 rooms are of international first-class standard. They are well furnished with fu...
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【简答题】已知某三相异步电动机在额定状态下运行，其转速为1430r/min，电源频率为50Hz。求：电动机的磁极对数p、额定运行时的转差率S N 、转子电路频率f 2 和转差速度Δn。
【简答题】Dongfang Hotel is a four-star hotel. It is located in the centre of the city, with a parking lot for 150 cars. The 650 rooms are of international first-class standard. They are well furnished with fu...
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