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The UK has a large sector of agriculture producing 11.6% of its national wealth. A. 对 B. 错
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单项选择题
气相反应4A+B3R+S进料时无惰性气体,A与B以3∶1的摩尔比进料,则膨胀因子A=()。
A.1/4
B.2/3
C.–1/4
D.–2/3
单项选择题
Morphemes are _____ units, which are realized in speech by discrete units known as ________ .
A.concrete;
B.abstract;
C.abstract;
D.concrete;
判断题
“三个代表”的重要论述事关党和国家的前途命运,是我们党的立党之本、执政之基、力量之源。()
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