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【单选题】
有些旋转体和偏心重量是分布在几个不同的回转平面内,即使其旋转重心在其旋转轴上,旋转时各不同回转平面内偏心重量产生的离心惯性力偶仍然是不平衡的,我们把这样的不平衡旋转体称为( )的旋转体。
A.
多回转面不平
B.
静不平
C.
动不平衡
D.
偶力不平
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参考答案：
举一反三
【简答题】根据句意及首字母提示写出单词。 1.I often eat _________ at 7:00 a.m. 2. My dad often goes for a w________ after dinner. 3. Tom usually takes a ________ ( 舞蹈 )class on the weekend. 4. —Do you like playing s________? —...
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【简答题】KVL的内容:任一时刻,沿任一( )的( )的代数和为( )
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【单选题】Waterlogged fields and coastal sand storms make people in parts of Guangdong Province introduce the 'dam-pond system' to raise fish in the pond and grow vegetables on tops of the dam around the pond.
A.
Y
B.
N
C.
NG
查看完整题目与答案
【单选题】For writing based on video, the writer should ____ in the video and then make comments on the issue discussed in the video.
A.
summarize the main idea
B.
write down every speaker’s words
C.
describe every character
查看完整题目与答案
【单选题】不能造成乱流,致使飞机颠簸的是
A.
大雾
B.
雷暴
C.
大风
D.
湍流
查看完整题目与答案
【单选题】I ’ m good at finding solutions to difficult situations. My friends often ask me to help them. They say I am a good problem solver. A problem solver .
A.
is good at finding the best way to do something
B.
needs a lot of help doing things
查看完整题目与答案
【单选题】. To help today’s customers make a choice, a company in New York _____a video trolley — a supermarket trolley with a video screen to display advertisement and price information.
A.
has invented
B.
had invented
C.
invents
D.
is inventing
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【单选题】听力原文：M Thank you for calling Green Valley automotive. How may I help you? W Hello, I have a question about routine oil changes. I just bought a new car and was wondering how often I should come in and...
A.
He sells cars.
B.
He fixes cars.
C.
He imports cars.
D.
He works for an oil company.
查看完整题目与答案
【单选题】听力原文：M: Uh, where am I? W: Excuse me. Do you need any help? M: Nab, I… I'm just looking.., well... Uh, well, actually.., yeah. Um... [23]I want to go to the science museum, but I've been lost for the ...
A.
To the science museum.
B.
To the art museum.
C.
To the state museum.
D.
To the history museum.
查看完整题目与答案
【多选题】群众、阶级、政党、领袖之间的关系是( )
A.
群众是划分为阶级的
B.
阶级通常是靠政党来领导的
C.
政党是靠领袖集团来主持的
D.
没有政党和领袖的领导,任何阶级的群众都不能获得彻底解放
查看完整题目与答案
相关题目：
【简答题】根据句意及首字母提示写出单词。 1.I often eat _________ at 7:00 a.m. 2. My dad often goes for a w________ after dinner. 3. Tom usually takes a ________ ( 舞蹈 )class on the weekend. 4. —Do you like playing s________? —...
查看完整题目与答案
【简答题】KVL的内容:任一时刻,沿任一( )的( )的代数和为( )
查看完整题目与答案
【单选题】Waterlogged fields and coastal sand storms make people in parts of Guangdong Province introduce the 'dam-pond system' to raise fish in the pond and grow vegetables on tops of the dam around the pond.
A.
Y
B.
N
C.
NG
查看完整题目与答案
【单选题】For writing based on video, the writer should ____ in the video and then make comments on the issue discussed in the video.
A.
summarize the main idea
B.
write down every speaker’s words
C.
describe every character
查看完整题目与答案
【单选题】不能造成乱流,致使飞机颠簸的是
A.
大雾
B.
雷暴
C.
大风
D.
湍流
查看完整题目与答案
【单选题】I ’ m good at finding solutions to difficult situations. My friends often ask me to help them. They say I am a good problem solver. A problem solver .
A.
is good at finding the best way to do something
B.
needs a lot of help doing things
查看完整题目与答案
【单选题】. To help today’s customers make a choice, a company in New York _____a video trolley — a supermarket trolley with a video screen to display advertisement and price information.
A.
has invented
B.
had invented
C.
invents
D.
is inventing
查看完整题目与答案
【单选题】听力原文：M Thank you for calling Green Valley automotive. How may I help you? W Hello, I have a question about routine oil changes. I just bought a new car and was wondering how often I should come in and...
A.
He sells cars.
B.
He fixes cars.
C.
He imports cars.
D.
He works for an oil company.
查看完整题目与答案
【单选题】听力原文：M: Uh, where am I? W: Excuse me. Do you need any help? M: Nab, I… I'm just looking.., well... Uh, well, actually.., yeah. Um... [23]I want to go to the science museum, but I've been lost for the ...
A.
To the science museum.
B.
To the art museum.
C.
To the state museum.
D.
To the history museum.
查看完整题目与答案
【多选题】群众、阶级、政党、领袖之间的关系是( )
A.
群众是划分为阶级的
B.
阶级通常是靠政党来领导的
C.
政党是靠领袖集团来主持的
D.
没有政党和领袖的领导,任何阶级的群众都不能获得彻底解放
查看完整题目与答案
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