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It was a quiet village in which there was a military( 军队的 ) camp. It was far from the towns and cities and there were some high mountains around. Of course it was a good place for training the new soldiers. But it was difficult for the young men to go outside. Mr. White, an officer of forty, was strict with them and he hardly let them leave the camp. Once Mr. White was ill in bed. He couldn't work and a young officer, Mr. Hunt, began to train the new soldiers instead of him. He knew the young men well and let nine soldiers go to the nearest town to have a holiday. But night fell and none came back to the camp. He was worried about it and stood at the gate. It was five to twelve when Mr. Hunt decided to go to the town and see what was happening to the young men. He started the car quickly and set off. At that moment the nine soldiers came back. It seemed they were all drunk. Of course they found the officer was angry. "I'm sorry, sir," said the first soldier. "I left the town on time. But something was wrong with my bus on my way here. I had to buy a horse and made it run fast. Bad luck! It died and I had to run back." And the other seven soldiers said they were late for the same reason. It was the last soldier's turn. He said, "I'm sorry, sir. I got on a bus on time, but..." Having heard this, the officer became even angrier and stopped him at once. He called out, "If you say something was wrong with your bus, I'll punish you at once!" "No, no, sir," said the young man. "My bus was all right, but the dead horses were in its way!"
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【单选题】以下关于铰链约束的说法中,正确的是( )
A.
光滑圆柱铰链中,销钉所串起来的两个构件它们所受到的约束力是一对作用力和反作用力,如果表示成正交分量的形式,则是两对作用力和反作用力。
B.
光滑铰链约束和光滑球铰链约束本质上都是光滑接触约束,约束力其实只有一个
C.
光滑铰链约束类型中包含径向轴承、光滑圆柱铰链、固定铰支座、光滑球铰链等
D.
光滑铰链、球铰链、止推轴承这几种工程中的常见约束,虽然约束力可以用两个或者三个正交分力表示,但约束力本质上都是一个力。
【单选题】以下关于铰链约束的说法中,正确的是( )
A.
光滑铰链约束和光滑球铰链约束本质上都是光滑接触约束,约束力其实只有一个。
B.
光滑铰链、球铰链、止推轴承这几种工程中的常见约束,虽然约束力可以用两个正交分力表示,但约束力本质上都是一个力。
C.
光滑圆柱铰链中,销钉所串起来的两个构件它们所受到的约束力是一对作用力和反作用力,如果表示成正交分量的形式,则是两对作用力和反作用力。
D.
光滑铰链约束类型中包含径向轴承、光滑圆柱铰链、固定铰支座、光滑球铰链等。
【简答题】Reading is fun.When you read,would you like a paper book or an e-book(电子书)? Some people choose e-books,some love paper books,and others like reading both. Li Ming,a university professor(教授),is busy do...
【单选题】以下关于铰链约束的说法中,正确的是( )
A.
光滑铰链约束和光滑球铰链约束本质上都是光滑接触约束,约束力其实只有一个
B.
光滑圆柱铰链中,销钉所串起来的两个构件它们所受到的约束力是一对作用力和反作用力,如果表示成正交分量的形式,则是两对作用力和反作用力
C.
光滑铰链约束类型中包含径向轴承、光滑圆柱铰链、固定铰支座、光滑球铰链等。
D.
光滑铰链、球铰链、止推轴承这几种工程中的常见约束,虽然约束力可以用两个或者三个正交分力表示,但约束力本质上都是一个力
【多选题】根据企业所得税法律制度的规定,下列收入中,不属于企业所得税免税收入的有( )。
A.
财政拨款
B.
国债利息
C.
物资及现金溢余
D.
依法收取并纳入财政管理的政府性基金
【单选题】单倍速CD-ROM驱动器的数据传输速率是( ) 。
A.
250KB/s
B.
100KB/s
C.
150KB/s
D.
128KB/s
【简答题】Read the text on Page 44 again. Complete the sentences with information from the text. Highlight the information in the text that help you find the answer. When you key in the answers to question 6, p...
【单选题】以下关于铰链约束的说法中,正确的是( )
A.
光滑铰链、球铰链、止推轴承这几种工程中的常见约束,虽然约束力可以用两个或者三个正交分力表示,但约束力本质上都是一个力。
B.
光滑圆柱铰链中,销钉所串起来的两个构件它们所受到的约束力是一对作用力和反作用力,如果表示成正交分量的形式,则是两对作用力和反作用力
C.
光滑铰链约束类型中包含径向轴承、光滑圆柱铰链、固定铰支座、光滑球铰链等。
D.
光滑铰链约束和光滑球铰链约束本质上都是光滑接触约束,约束力其实只有一个。
【简答题】根据短文内容,判断下列句子的正误。你认为正确的句子请在题前括号内写“T”, 错误的写“F”。 When you go to the doctor's you may often have your eyesight checked. The doctor makes you read a chart with big and small 'E's'on it. Do you know where ...
【简答题】Reading is fun.When you read,would you like a paper book or an e-book(电子书)? Some people choose e-books,some love paper books,and others like reading both. Li Ming,a university professor(教授),is busy do...
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