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【单选题】三相六极异步电动机,接到频率为50Hz的电网上额定运行时,其转差SN=0.04,额定转速为( )
A.
1000转/分
B.
960转/分
C.
40转/分
D.
60转/分
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【单选题】--Are you sure you're ready for the best? --_________. I'm well prepared for it.
A.
I'm afraid not
B.
No problem
C.
Hard to say
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Not really
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【单选题】三相六极异步电动机,接到频率为 50Hz的电网上额定运行时,其转差率S N =0.04,额定转速为( ) 。
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40转/分
B.
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C.
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D.
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【简答题】阅读理解。 If you're like most students, you probably read both at home and outside your home: perhaps somewhere on your schoolyard and maybe even at work during your breaks. Your reading environment can h...
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【判断题】囚徒困境是一种市场失灵现象。
A.
正确
B.
错误
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【单选题】If you’re around people complaining others, ______ are that you will start to complain as well.
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reasons
B.
attempts
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chances
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messages
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【单选题】---Why not take a short rest at home today? --- .
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Have a good time.
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【简答题】Planning your holiday? Whether you’re going to Yunnan or UK, it’s important to make sure you’re well-prepared. Here’s a handy checklist to help you. Location The first thing you have to decide is wher...
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【简答题】阅读理解。 You're driving home from work.  You're tired, and the thought of shopping for food and cooking dinner makes you even more tired. Suddenly you see a brightly lit sign: 'Hamburgers! Fries! Shakes!...
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【简答题】You’re sitting on the train home and the person opposite you yawns(打哈欠). Suddenly, you’re yawning with him, though you’re not tired. This phenomenon confused scientists for years until a recent study ...
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【单选题】三相六极异步电动机,接到频率为50Hz的电网上额定运行时,其转差SN=0.04,额定转速为( )
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【单选题】--Are you sure you're ready for the best? --_________. I'm well prepared for it.
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【判断题】囚徒困境是一种市场失灵现象。
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【单选题】If you’re around people complaining others, ______ are that you will start to complain as well.
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【单选题】---Why not take a short rest at home today? --- .
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【简答题】Planning your holiday? Whether you’re going to Yunnan or UK, it’s important to make sure you’re well-prepared. Here’s a handy checklist to help you. Location The first thing you have to decide is wher...
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【简答题】阅读理解。 You're driving home from work.  You're tired, and the thought of shopping for food and cooking dinner makes you even more tired. Suddenly you see a brightly lit sign: 'Hamburgers! Fries! Shakes!...
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【简答题】You’re sitting on the train home and the person opposite you yawns(打哈欠). Suddenly, you’re yawning with him, though you’re not tired. This phenomenon confused scientists for years until a recent study ...
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