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【单选题】
用通用示波器观测正弦波形,已知示波器良好,测试电路正常,但在荧光屏上却出现了上半部分削顶的波形,应调整示波器( )旋钮或开关才能正常观测。A.
偏转灵敏度粗调
B.
Ｙ位移
C.
扫描速度粗调
D.
Ｘ位移
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举一反三
【单选题】听力原文：How are you these days? (5)
A.
Yes, of course.
B.
How do you do?
C.
The same to you.
D.
Fine, thank you.
【单选题】How are you these days? I hope you are _____. [ ]
A.
good
B.
nice
C.
badly
D.
well
【单选题】How are you these days?
A.
I'm fine, thank you, And you?
B.
How do you do.
C.
How are you.
D.
Glad to see you.
【简答题】阅读理解 Dear Fang, How are you these days? I have been in England for two months. It’s not a long time for a newcomer, and there are still a lot of things to do. Sorry for not being able to write to you ...
【单选题】听力原文：M: Good morning, Patricia. How are you these days? W: Fine, thanks, Bill. Glad to see you again. What news can you bring from your business trip to our headquarters in New York last week? M: Well...
A.
He was at a news conference.
B.
He was on a business trip.
C.
He was traveling with the company's CEO.
D.
He was negotiating with a New York agent.
【单选题】How are you these days, Mike?
A.
I've been better.
B.
Not bad.
C.
I'm doing well.
D.
All of the above.
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