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区分工序的主要依据是( )
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举一反三
【单选题】Why is the woman asking for the man's assistance?
A.
He used to be a psychologist.
B.
He wrote a book on the subject.
C.
He studied the topic in university.
D.
He is a stock analyst.
【单选题】以下几种电子能级跃迁,需要能量最大的是
A.
n→σ*
B.
π→π*
C.
n→π*
D.
σ→σ*
【单选题】What's the problem, Harry?-()
A.
No problem
B.
No trouble at all
C.
Thank you for asking me about it
D.
I can't remember where I left my glasses
【单选题】正常成年人氮的摄入量()排出量
A.
大于
B.
等于
C.
小于
D.
小于等于
【单选题】应用标准套筒滚子链传动的额定功率曲线,必须根据_____来选择链条的型号和润滑方法。
A.
链条的圆周力和传递功率
B.
小链轮的转速和计算功率
C.
链条的圆周力和计算功率
D.
链条的速度和计算功率
【多选题】以下网站中,( )可以进行票务查询、购买。
A.
大麦网
B.
永乐票务
C.
淘票票
【单选题】— He works quite hard. — Maybe you don't know that he always ____ without asking for leave when he ____ in another company. [     ]
A.
went to work; was
B.
goes to work; is
C.
didn't go to work ; was
D.
doesn't go to work; is
【判断题】He's asking you to look at both sides of the case and come to an emotional decision.
A.
正确
B.
错误
【简答题】He's asking you to look at both sides of the case and come to a decision. (reasonable)
【单选题】以下类型的电子能级跃迁,需要能量最大的是?
A.
π→π*
B.
σ→σ*
C.
n→π*
D.
n→σ*
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