皮皮学,免费搜题
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【单选题】
ACCESS 2010 数据库文件的扩展名是。
A.
DBF
B.
ACCDB
C.
INX
D.
TAB
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举一反三
【单选题】Speaker A: Hello, May I speak to Mr. Smith? Speaker B: ______
A.
Yes, I am Mr. Smith.
B.
No, he is not in the office right now.
C.
Speaking!
D.
He is not here. Can I speak for him?
【单选题】听力原文:M: Hello. May I speak to Mr. George? W: Mr. George is not in, could you please give him a message? Q: What does the man want to do? (14)
A.
Talk to Mr. George.
B.
Send a letter to Mr. George.
C.
Give Mr. George a present.
D.
Visit Mr. George.
【单选题】“ May I speak to Mr.Charlson?” “Sorry, Mr.Charlson is at a meeting.Would you like to ( )?”
A.
leave a message
B.
have a message
C.
leave information
D.
have information
【单选题】处理具有 1Hz 固定频率的有用信号时 应采用哪种类型的滤波电路
A.
低通
B.
高通
C.
带通
D.
带阻
【单选题】处理具有 1Hz 固定频率的有用信号 , 选用 ( ) 。
A.
低通滤波
B.
高通滤波
C.
带通滤波
D.
带阻滤波
【单选题】May I speak to Mr. Green?
A.
Sorry, he is not in.
B.
I am Mr. Green.
C.
You are welcome.
D.
It doesn’t matter.
【单选题】处理具有 1Hz 固定频率的有用信号应选用哪种类型的滤波电路 ?
A.
带阻滤波器
B.
带通滤波器
C.
低通滤波器
D.
高通滤波器
【单选题】处理具有 1Hz 固定频率的有用信号 。
A.
带阻滤波器
B.
带通滤波器
C.
低通滤波器;
D.
高通滤波器
【单选题】听力原文:M. Hello. May I speak to Mr. George? W: Mr. George is not in, could you please give him a message? Q: What does the man want to do? (9)
A.
Talk to Mr. George.
B.
Send a letter to Mr. George.
C.
Give Mr. George a present.
D.
Visit Mr. George.
【判断题】绝缘手套应存放在通风、阴凉的专用柜子里。( )(1分)加油!必过!
A.
正确
B.
错误
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