铸件上某处的残留应力超过了钢的强度时，就会在该处发生（）。

阅读理解。

                                                          Sailing

     Welcome to our TV show On the Go. Today we are going to talk about an exciting sport-sailing. First

let's talk to Sue, an 18-year-old girl who loves sailing.

Host: When did you start sailing, Sue?

Sue: I started sailing when I was 15 years old.

Host: Is it a difficult sport to learn?

Sue: Yes, it is more difficult than any other sport. For example,you need to learn about the wind

       directions (方向) and how to move the sails in the right way.

Host: How often do you go sailing?

Sue: I go sailing with my father every weekend.

Host: How far do you go sailing?

Sue: It depends on the wind.

Host: OK. Thank you,Sue. Good luck with your sailing.

     Are you interested in sailing after hearing the interview?

     If you want to learn sailing, here is a chance for you.The Water Sports Center will organize sailing

lessons. Each lesson will cost you ￥20 and there are 5 lessons altogether (总共).

1. What does Sue think of learning sailing?

A. Easy.

B. Boring.

C. Difficult.

D. Dangerous.

2. Which of the following is TRUE according to the passage?

A. Sue always sails very far.

B. Sue goes sailing every weekend.

C. Sue goes sailing with her friends.

D. Sue started sailing at the age of 18.

3. If you want to learn sailing at the Water Sports Center,how much will you pay?

A. ￥15.

B. ￥20.

C. ￥50.

D. ￥100.

小亮和小满的身高大约都是1.5 ×10²cm，但小亮说他比小满高9cm，请你判断：是否有这种可能？答案是(    )．

测验信度

漂流工具操作人员上岗前必须由（）进行旅游服务和旅游安全培训。

A.旅游管理部门

B.经营企业

C.公安管理部门

D.水运管理部门

E.交通管理部门

在SQLServer中创建数据库，如下哪些描述是正确的？（）

A、创建数据库的权限默认授权sysadmin和dbcreator固定服务器角色的成员，但是它仍可以授予其他用户

B、创建数据库的用户将成为该数据库的所有者

C、在一个服务器上，最多可以创建32，767个数据库

D、数据库名称必须遵循标示符规则