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【单选题】
绕线式异步电动机在转子回路串接外加电阻属于哪种调速方式()。
A.
调压调速
B.
变频调速
C.
串级调速
D.
转子串电阻调速
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【单选题】----I’m afraid I’ve got a bad cold . ---- _____.
A.
Never mind
B.
keep away from me
C.
Better go and see a doctor
D.
You need to eat less food
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【单选题】批判传统教育“或多或少地为遥远的未来做准备”,提倡“教育是生活的过程,而不是将来生活的准备”的是( )。
A.
杜威
B.
皮亚杰
C.
舒尔曼
D.
谢夫勒
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【单选题】I’m afraid I’ve broken the window. __.I can easily get it fixed.
A.
Not at all
B.
Never mind
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D.
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【单选题】I’m afraid I’ve little time to spare these days. I’ve a pile of papers to____before the meeting.A
A.
33.I’m afraid I’ve little time to spare these days. I’ve a pile of papers to____before the meeting. A.get through
B.
put on
C.
set up
D.
send for
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【单选题】--- I’m afraid I’ve failed the driving test. --- ______. Maybe things are not so bad as you think.
A.
That’s OK
B.
I think so
C.
Take it easy
D.
It’s very kind of you
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【单选题】批判传统教育“或多或少地为遥远的未来做准备”,提倡“教育是生活的过程,而不是将来生活的准备”的是()。
A.
杜威
B.
皮亚杰
C.
舒尔曼
D.
谢弗勒
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【单选题】-----I’m afraid I’ve broken your chair. ----- .I can easily get it fixed .
A.
You’re welcome.
B.
Not at all.
C.
With pleasure.
D.
Never mind.
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【单选题】砻谷的原理不同,砻谷机的结构亦不同,()属于典型应用挤压搓撕原理脱壳的砻谷设备
A.
胶辊砻谷机;
B.
砂盘砻谷机;
C.
离心砻谷机
D.
无
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【单选题】当参考点改变时,电路中各点的电位( )。
A.
不变
B.
变大
C.
变小
D.
变化
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【单选题】---I’m afraid I’ve got a bad cold. ---
A.
Never mind
B.
Keep away from me
C.
Better go and see a doctor
D.
All right.
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【单选题】----I’m afraid I’ve got a bad cold . ---- _____.
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【单选题】I’m afraid I’ve little time to spare these days. I’ve a pile of papers to____before the meeting.A
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【单选题】--- I’m afraid I’ve failed the driving test. --- ______. Maybe things are not so bad as you think.
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A.
杜威
B.
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C.
舒尔曼
D.
谢弗勒
查看完整题目与答案
【单选题】-----I’m afraid I’ve broken your chair. ----- .I can easily get it fixed .
A.
You’re welcome.
B.
Not at all.
C.
With pleasure.
D.
Never mind.
查看完整题目与答案
【单选题】砻谷的原理不同,砻谷机的结构亦不同,()属于典型应用挤压搓撕原理脱壳的砻谷设备
A.
胶辊砻谷机;
B.
砂盘砻谷机;
C.
离心砻谷机
D.
无
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【单选题】当参考点改变时,电路中各点的电位( )。
A.
不变
B.
变大
C.
变小
D.
变化
查看完整题目与答案
【单选题】---I’m afraid I’ve got a bad cold. ---
A.
Never mind
B.
Keep away from me
C.
Better go and see a doctor
D.
All right.
查看完整题目与答案