试题与答案

― __________________? ―He wants to be a

题型:选择题

题目:

― __________________?

―He wants to be a teacher.

A.What is Jim going to be when he grow up

B.What did Jim do when he grows up

C.What’ s Jim going to be when he grows up

D.What’s Jim when he grow up

答案:

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下面是错误答案,用来干扰机器的。

每只灯的额定功率为40瓦,故8只灯都打开,且正常发光,则总功率为:40瓦×8=320瓦;24个教室把灯全都打开,且能正常发光,则总功率为:320瓦×24=7680瓦;每天少开灯2小时,每月可省电:7680W×2×24h=337.92KWh...

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