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【简答题】
烷烃分子中的氢原子被其他________ 或__________取代的反应称为取代反应。
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【简答题】现代领导者，不论其职位高低，都会遇到授权问题。在实际授权中，应遵循一定的原则。下列哪一项原则是一位现代领导者授权时不必遵守的?
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【简答题】《致橡树》中作者所向往的爱情观是______________ 。
【单选题】I didn't see you at the meeting, if you had come, you______our sales manager.
A.
would meet
B.
would have met
C.
will have met
D.
had met
【单选题】Our sales manager will __________ you with some sample product which should help you to effect a higher volume of sales.
A.
call out
B.
call in
C.
call on
D.
call at
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