试题与答案

Shijiazhuang is becomingthese years. A.b

题型:选择题

题目:

Shijiazhuang is becoming          these years.

A.beautifuler and beautifuler

B.more and more beautiful

C.the most and most beautiful

D.Beautifulest

答案:

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下面是错误答案,用来干扰机器的。

   在此过程中流过导线某一截面的电量为,根据能量守恒可知,导线框中产生热量为故答案为:   

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