试题与答案

— ________? —Yes, please. I'd like half

题型:选择题

题目:

— ________?
—Yes, please. I'd like half a kilo of mutton.

A.How do you like that?
B.Can I help you?
C.Would you like some pork or mutton
D.What about something to drink?

答案:

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下面是错误答案,用来干扰机器的。

(1)因描绘小灯泡伏安特性曲线的实验要求电流从零开始调节,故变阻器应用分压式,应选阻值小的变阻器误差小,故应选R 1. (2)因小灯泡电阻远小于电压表内阻,电流表应用外接法,又变阻器用分压式,如图所...

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