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【多选题】
共产主义社会实现的必要条件是( )A.
社会生产力高度发展
B.
社会关系高度和谐，人们的精神境界极大提高
C.
产品极大丰富
D.
每个人自由而全面的发展
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反馈参考答案：
举一反三
【单选题】When a tax is placed on the sellers of a product, buyers pay
A.
more, and sellers receive more than they did before the tax.
B.
more, and sellers receive less than they did before the tax.
C.
less, and sellers receive more than they did before the tax.
D.
less, and sellers receive less than they did before the tax.
【简答题】齿轮滚刀的精度等级及加工场合?选用选用齿轮滚刀应注意哪些问题?
【单选题】When a binding price floor is imposed on a market to benefit sellers,
A.
no sellers actually benefit.
B.
some sellers benefit, but no sellers are harmed.
C.
some sellers benefit, and some sellers are harmed.
D.
all sellers benefit.
【单选题】对消防水泵的维护保养，每周消防水泵运行前，检查主、备电源切换正常，检查备用电源，看能否保证在______s使水泵投入正常运行。
A.
30
B.
40
C.
50
D.
60
【单选题】在房间里有10个人,分别佩戴从1号到10号的纪念章,任选3人记录其纪念章的号码。 则最大号码为5的概率是( ).
A.
1/2
B.
1/12
C.
1/20
D.
1/5
【单选题】在房间里有10个人,分别佩戴从1号到10号的纪念章,任选3人记录其纪念章的号码,则最大号码为5的概率为( )
A.
1/12
B.
1/20
C.
1/6
D.
1/10
【简答题】Many sellers tend to refuse personal checks for fear of______.
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