题目:
选择句子完成对话,其中有两项多余。
A: I want to spend my summer holidays in Xiamen. 1
B: No, it’s not too hot.
A: 2
B: Yes, I like the city very much. It’s becoming one of the most modern cities in the world.
A: 3
B: The city is clean and beautiful. There are long beaches by the sea. The people are kind, too.
A: 4
B: Of course. It’ll make you feel cool.
A: How cool! Swimming in the sea must be more wonderful.
B: I’m sure you’ll have a good time there.
A: Would you please go with me?
B: 5
A: What a pity!
A.I like the city very much.
B.Is it hot there in summer?
C.Can I swim there?
D.Do you know about it?
E.Sorry. I have no time.
F.Do you like the city?
G.What do you think of the city?
答案:
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BD题目分析:在纯电阻电路中,电功,电热,且电功全部转为电热,即,在非纯电阻电路中,电功,电热,电功一部分转化为机械能,一部分转化为电热,即,也就说计算电功的公式适用于任何电路,计算电热的公式也适用...