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【单选题】
Which is the most visited historic home in Melbourne?
A.
t he Captain Cook’s Cottage
B.
the Old Melbourne Gaol
C.
Penguin Island
D.
Melbourne Aquarium
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参考答案:
举一反三
【简答题】发热对电器会产生哪些不良的影响?
【单选题】听力原文:W: Yes, sir. You rang? M: Yes, I wonder if you could bring me another martini. W: Certainly. Would you like anything else? M: Well, I suppose this is kind of foolish, but my son-in-law is suppose...
A.
At the airport.
B.
At a hotel.
C.
On a plane.
D.
At a restaurant.
【单选题】发热对电器产生的不良影响有
A.
机械强度下降
B.
接触电阻增大,绝缘性能和机械强度都下降
C.
接触电阻增大
D.
绝缘性能下降
【单选题】听力原文:W: Are you going to attend the lecture this evening? M: Well. I wonder if Jason can make it. He hasn't finished his maths paper. W: I think he will have finished it by six. M: Sounds like there i...
A.
go on writing his paper.
B.
attend the lecture.
C.
miss the lecture.
D.
try to solve the problem.
【单选题】听力原文:W: Good afternoon, sir. M: Good afternoon. W: I wonder if you'd like to answer a few questions. We are doing a market survey. It won't take very long. M: Well, all right. W: Well, it is a questio...
A.
They are talking about making the bed.
B.
They are doing a market survey.
C.
They are talking about reading novels.
D.
They are discussing about recent violence matters.
【单选题】听力原文:W: There are so many children at the school. I wonder how the teacher keeps track of them. M: I used to get cold feet at the thought of teaching a class of 50. Q: What was the man's attitude towa...
A.
Timid.
B.
Hostile.
C.
Enthusiastic.
D.
Sympathetic.
【简答题】习惯型消费人群属于( )主导人群
【单选题】发热对电器产生的不良影响有( )。
A.
机械强度下降
B.
绝缘性能下降
C.
接触电阻增大
D.
接触电阻增大,绝缘性能和机械强度都下降
【多选题】发热对导体和电器产生的不良影响有( )
A.
机械强度下降
B.
接触电阻增加
C.
磁通饱和
D.
绝缘性能降低
【多选题】发热对电器产生的不良影响包括_。
A.
机械强度下降
B.
绝缘性能降低
C.
接触电阻增加
D.
过电压
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