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块A位于光滑水平桌面上，块B处于桌面上的光滑小槽中，两滑块的质量都是m，并用长为2l、不可伸长、无弹性的轻绳相连。开始时，A，B间的连线与小槽垂直且长为l如图2—15所示。B初始静止，现给滑块A以平行于槽的速度v0。求当B开始运动时B的瞬时速度的大小。
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【单选题】—Is that Mr. Wang speaking? —Sorry. He isn’t at home. He ________ abroad for a trip.
A.
has gone to
B.
has been to
C.
has gone
D.
has been
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【单选题】Mr. Wang often comes to work very early, ______?
A.
isn’t he
B.
does he
C.
doesn’t he
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【简答题】Amy: Hello, ABC Company. How can I help you? Jim: Hi. May I speak to Mr. Wang? Amy: I’m sorry. Mr. Wang isn’t in the office at the moment. Would you like to leave a 1) _______? Jim: Yes, please. Cou...
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【简答题】白僵蚕断面平坦,外层白色,中间棕色或棕黑色,具丝腺环( )。A.1个B.2个C.3个D.4个A. 1 B. 1 C. 1 D. 1
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【单选题】---- Mr. Wang isn’t a teacher, is he? ---- . He’s taught in our school for 5 years. A. No, he is B. No. he isn’t C. Y es, he is D. Yes, he isn ’ t
A.
B.
C.
D.
D
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【多选题】确定权重的方法的主要有( )
A.
主观经验法
B.
德尔斐法
C.
因子分析法
D.
权重分析法
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【单选题】---Mr. Wang isn’t a teacher, is he? ---- . He’s taught in our school for 5years.
A.
No, he is
B.
No. he isn’t
C.
Yes, he is
D.
Yes, he isn’t
查看完整题目与答案
【多选题】科学发展观包括()
A.
全面发展
B.
协调发展
C.
效率发展
D.
可持续发展
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【单选题】白僵蚕断面平坦,外层白色,中间棕色或棕黑色,具丝腺环( )。
A.
1个
B.
2个
C.
3个
D.
4个
查看完整题目与答案
【单选题】Mr. Wang isn’t popular with his students because he doesn’t treat them _____.
A.
equally
B.
badly
C.
regularly
D.
formally
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相关题目：
【单选题】—Is that Mr. Wang speaking? —Sorry. He isn’t at home. He ________ abroad for a trip.
A.
has gone to
B.
has been to
C.
has gone
D.
has been
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【单选题】Mr. Wang often comes to work very early, ______?
A.
isn’t he
B.
does he
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【简答题】Amy: Hello, ABC Company. How can I help you? Jim: Hi. May I speak to Mr. Wang? Amy: I’m sorry. Mr. Wang isn’t in the office at the moment. Would you like to leave a 1) _______? Jim: Yes, please. Cou...
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【单选题】---- Mr. Wang isn’t a teacher, is he? ---- . He’s taught in our school for 5 years. A. No, he is B. No. he isn’t C. Y es, he is D. Yes, he isn ’ t
A.
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A.
主观经验法
B.
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D.
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查看完整题目与答案
【单选题】---Mr. Wang isn’t a teacher, is he? ---- . He’s taught in our school for 5years.
A.
No, he is
B.
No. he isn’t
C.
Yes, he is
D.
Yes, he isn’t
查看完整题目与答案
【多选题】科学发展观包括()
A.
全面发展
B.
协调发展
C.
效率发展
D.
可持续发展
查看完整题目与答案
【单选题】白僵蚕断面平坦,外层白色,中间棕色或棕黑色,具丝腺环( )。
A.
1个
B.
2个
C.
3个
D.
4个
查看完整题目与答案
【单选题】Mr. Wang isn’t popular with his students because he doesn’t treat them _____.
A.
equally
B.
badly
C.
regularly
D.
formally
查看完整题目与答案
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