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【单选题】
脉冲当量是A.
一个指令脉冲所对应工作台的位移量
B.
一个脉冲的宽度
C.
脉冲的间隔
D.
脉冲的频率
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皮皮学刷刷变学霸
举一反三
【简答题】--Would you like ________ more tea? --Thank you．I've had
【简答题】消费者心理是指消费者在（）中发生的心理活动。
【多选题】关于温氏法测血细胞比容,下列说法正确的是()
A.
离心管必须洁净干燥
B.
离心力不足时血细胞比容误差很大
C.
抗凝剂可以选用EDTA-K2
D.
可采用双草酸盐抗凝剂
E.
可采用肝素抗凝剂
【单选题】Adam: Mmm….. This is the best pudding I've ever had! Celia:________ I know you'd like it.
A.
Didn't't I tell you?
B.
Did I say it right?
C.
Is what I said right?
D.
What did I say?
【单选题】— You looked so ______, what’s the matter? — I’ve had a very trying time this afternoon. I had to spend the whole listening to the _____ lecture by Mr. Smith.
A.
tired; boring
B.
tired; boring
C.
tiring; bored
D.
tiring; bored
【单选题】—I’ve_____the bike_____a year. —Is it still new?
A.
had,for
B.
bought,for
C.
had,since
【单选题】---I feel terrible ,but I’ve just broken your ashtray. ---_________, for I had meant to change it.
A.
Go head
B.
No problem
C.
it’s nothing to get upset about
D.
I’ll look into it immediately
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