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【单选题】
According to the passage, the author ______.A.
is mad at Britain's prevention of superstores.
B.
is in favor of France's restrictions on big stores.
C.
is impartial and makes no tendentious statements.
D.
has made some favorable comments on retailers.
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【单选题】平面任意力系向某一定点 O 简化,若主矢 ,主矩 ,则此力系简化的最后结果, 。
A.
可能是一个力偶，也可能是一个力
B.
一定是一个力偶
C.
可能是一个力，也可能是力和一个力偶
D.
一定是力和一个力偶
【简答题】一国利率水平相对于其他国家提高，会导致该国货币远期贬值。( )
【简答题】总生物碱的溶剂提取法有_________、_________和_________。
【简答题】溶剂提取法中的冷提方法包括_____、_____。
【单选题】The minister kept the American waiting because ______.
A.
the minister didn't think it was wrong to keep people waiting
B.
the appointed time did not suit the minister
C.
the minister intended to Insult the American
D.
the minister forgot the appointment time
【单选题】选择当前操作的数据库EDUC,正确的是()
A.
use database EDUC;
B.
look database EDUC;
C.
show database EDUC;
D.
use EDUC;
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