【单选题】【消耗次数：1】
在自动控制系统中，步进电机通常用于控制系统的（）
①
半闭环控制
②
闭环控制
③
开环控制
④
前馈控制
参考答案：
复制
纠错
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随机题目
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A: That was a great dinner. [填空] B: Thanks. But it really only took an hour.
①
I have never had it before.
②
You must have spent all day cooking.
③
I enjoyed it very much.
④
Who cooked it?
【单选题】
The cruelty of the Germans towards the Jews and ______ of the Japanese towards their prisoners, filled _____ with horror.
①
those; someone
②
that; everyone
③
no one
④
this; anyone
【单选题】
Of all the movies Hepbum made ______ is more memorable than “Breakfast at Tiffanys”.
①
few
②
little
③
no one
④
none
【单选题】
A: Its very kind of you to show me the way. B: [填空].
①
Youre welcome
②
It was nothing
③
Not at all
④
Never mind
【单选题】
5.Allthe_______havethree______each.
①
hero;photo
②
heroes;photoes
③
heroes;photos
④
heros;photos
【单选题】
A: How do I get to the new library?B: [填空].
①
Im sorry I cant understand
②
You could take the number 11 bus
③
Im afraid you missed the bus
④
Im glad to show you the way
【单选题】
A: Does this bus go to the bookstore?B:[填空].
①
The bus is so crowded
②
No. Youd better change at the next stop
③
The bookstore is five blocks away
④
You should wait in line
【判断题】
党的十九大的主题是：不忘初心，牢记使命，高举中国特色社会主义伟大旗帜，决胜全面建成小康社会，夺取新时代中国特色社会主义伟大胜利，为实现中华民族伟大复兴的中国梦不懈奋斗。
①
正确
②
错误