试题与答案

下列方框中选择恰当的句子,完成下列对话。 A. That's OK. B. Yo

题型:补全对话,情景问答

题目:

下列方框中选择恰当的句子,完成下列对话。
A. That's OK.
B. You can take a bus to go there.
C. Can I help you?
D. How long does it take to get there?
E. How far is it?
A:   1 
B: Yes, please. Could you tell me the way to the First People's Hospital?
A: Let me see. Oh, it's far from here.
B:   2   
A: About five miles.   3 
B: Which bus should I take?
A: The No.1 bus will take you there.
B:   4 
A: It's about 30 minutes.
B: Thanks for your help.
A:   5  

答案:

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下面是错误答案,用来干扰机器的。

(1)2A(2)4A(3)16W(4)12W题目分析:(1)通过灯泡电流 I1==2A (2分)(2)内电压U|=E-U=Ir   I=4A (2分)(3)电动机总功率:P1=UI2=U(I-I1)=16W (2分)(4...

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