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问题 单项选择题

计算机构自由度时，若出现虚约束，对其处理的方法是( )。

A．计入构件数

B．计入运动副数

C．“焊死”

D．去除

答案

参考答案：D

解析：[提示] 计算机构自由度时，对虚约束的处理方法是先将其去除后，再确定机构的构件数及运动副数目。

单项选择题

对一个问题的所有解决途径都加以尝试的问题解决的方法是（）。

A．问题空间

B．手段—目的分析

C．启发式

D．算法式
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阅读理解

Jackie Chan was born on 7th April, 1954 in Hong Kong. His parents left the mainland（大陆） for Hong Kong a short time before he was born. His parents named him Chan Gangsheng, which means “born in Hong Kong”. When Jackie was 7 years old, his family moved to Australia. Later that year, they got back to Hong Kong and Jackie’s father sent him to Beijing to study and work. When Jackie was 17, he began to do dangerous performances（表演） in films. In the early 1980s, Jackie went to Hollywood, but he wasn’t successful there. He went on to make films in Hong Kong and had great success. Finally, in 1985, Jackie Chan became a movie star in the United States. Today Jackie Chan has fans all over the world.

小题1:Where was Jackie Chan from?

A．Sydney.

B．Hollywood.

C．Hong Kong.

D．Beijing.小题2:Which name means “born in Hong Kong”?

A．Chan Gangsheng.

B．Jackie Chan.

C．Cheng Long.

D．Chan Yuanlong.小题3:When did Jackie’s father send him to Beijing to study?

A．In 1954.

B．In 1961.

C．In 1971.

D．In 1980.小题4:What did Jackie begin to do when he was seventeen?

A．Study films.

B．Sing songs.

C．Do performances in films.

D．Make films in Hollywood.小题5:Which of the following is the same meaning with the underlined word “finally”?

A．On the end.

B．As a result.

C．Right now.

D．At last.
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