平面连杆机构能够实现一些较为复杂的（）运动。 A.平面 B.直线 C.曲线

完形填空。

     A is a new student. Mr. Wang is asking him some questions. 

W: are new here, am I right?

A: Yes, you are right, Mr. Wang.

W:  1  ?

A: Yes, what are they?

W:   2  ?

A: On July 14, 1983.

W: Where were you born?

A: I was born in Sydney in Australia.

W:   3  ?

A: For about eight years.

W: And  4  ?

A: They were born in Sydney, too.

W: Are they living in China?

A:  5  . He is coming soon.

(    )1. A. May I ask you some questions

           B. Shall I ask you any questions

           C. Can you ask me any questions

           D. Do you have any questions

(    )2. A. Where were you born

           B. When were you born

           C. Who was born on July 14, 1983

           D. Were you born on July 14, 1983

( )3. A. How often did you live there

           B. How did you live there

           C. Why did you live there

           D. How long did you live there

( )4. A. Were your parents born in Sydney, too

           B. Who were born in Sydney

           C. Where were your parents born

           D. When were your parents born

( )5. A. Mum is, but Dad works in Sydney

           B. Mum does, but Dad works in Sydney

           C. Dad is, but Mum works in Sydney

           D. Dad does, but Mum works in Sydney

软件测试是保证软件质量的重要手段，其首要任务是

A．保证软件的正确性

B．改正软件存在的错误

C．发现软件的潜在错误

D．实现程序正确性证明

试述企业在成长期各阶段的管理重点。

拆船业，是将报废船只拆毁的工业，拆船业做为钢铁资源的重要补充途径，是循环经济的一个重要组成部分，具有广阔发展前景，但拆船过程中也会不同程度地对环境和工人健康造成危害。近年来，国际相关组织对拆船行业给予了高度重视，并提出了《国际安全和环境无害化拆船公约》。图为“1956年～2006年世界废船年拆解量和拆船中心国际转移示意图”。读图完成各题。

伴随拆船业转移的最可能是（）

A.拆船技术

B.拆船工人

C.环境污染

D.企业资金

将数学表达式Cos²(a+b)+5e²写成Visual Basic的表达式，其正确的形式是

A．Cos(a+~2+5*exp(2)

B．CoC2~2(a++5*exp(2)

C．Cos(a+~2+5*In(2)

D．Cos~2(a++5*ln(2)