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问题 单项选择题

inventor资源中心库中调用的零件可以作为几种形式出现？（）

A.1

B.2

C.3

D.4

答案

参考答案：C

阅读理解

Jane White is an American girl．She is a student．She is fifteen．Her father is Mr. White．Her mother is Mrs. White．Bob is her brother．He is a student, too．He is in a black jacket．Jane is in a green jacket. She is a nice girl

小题1:Jane White is an English student.               

小题2:Jane is fourteen years old．

小题3:Jane is Mrs. White’s daughter(女儿)．            

小题4:Bob is Jane’s brother．

小题5:Jane is in red and Bob is in black. 
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单项选择题

焦煤的挥发份为（）。

A.13-20

B.28-37

C.20-28
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