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【判断题】
They say that English can be a very difficult language for one to learn in his later years.A.
正确
B.
错误
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举一反三
【单选题】Why do people feel squeezed when their average income rises considerably?
A.
Their material pursuits have gone far ahead of their earnings.
B.
Their purchasing power has dropped markedly with inflation.
C.
The distribution of wealth is uneven between the rich and the poor.
D.
Health care and educational costs have somehow gone out of control.
【单选题】某企业生产A产品经过两道工序，各工序的工时定额分别为10小时和20小时，则第二道工序的完工率为（ ）。
A.
16.67%
B.
50%
C.
66.67%
D.
100%
【简答题】Why do people feel squeezed when their average income rises considerably? A) Their material pursuits have gone far ahead of their earnings. B) Their purchasing power has dropped markedly with inflatio...
【简答题】三种原子光谱(发射、吸收与荧光)分析法在应用方面的主要共同点是 。
【简答题】酶含量测定包括酶 和酶质量测定两种类型，但以前者为主。
【单选题】某企业生产产品经过两道工序，各工序的工时定额分别为60小时和20小时，则第二道工序在产品的完工率为（ ）。
A.
37.5%
B.
50%
C.
87.5%
D.
100%
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