当水炮的设计工作压力与产品额定工作压力不同时，应在产品规定的工作压力范围内选用。（）

阅读理解。

                                                                     TYPING

     This course(课程) is for those who want to learn to type ,as well as those who want to improve

their typing. The course is not common. You are tested in the first class and begin practising at one of

eight different skill levels(水平). This allows you to learn at your own speed. Each program lasts 20

hours. Bring your own paper.

     Course fee(费用): $125     Materials: $25

     Two hours each evening for two weeks. New classes begin every two weeks.

     This course is taught by a number of professional business education teachers who have successfully

taught typing courses before.

                                           UNDERSTANDING COMPUTERS

     This twelve - hour course is for people who do not know very much about computers, but who need

to learn about them. You will learn what computers are, what they can and can't do and how to use them.

     Course fee: $75  Jan. 4,7,11,14,18  Wed.& Sat. 9:00-11:30a. m.   Equipment fee: $10

     David is a professor(教授) of Computer Science at Beijing University. He has over twenty years of

experience in the computer field.

                                                           STOP SMOKING

     Do you want to stop smoking? Have you already tried to stop and failed? Now is the time to stop

smoking using the latest methods (方法). You can stop smoking, and this twelve -hour course will help

you do it.

     Course fee: $30    Jan. 2,9,16,23     Mon. 2:00-5:00p. m.

     Dr John is a practising psychologist who has helped hundreds of people stop smoking.

1. If you choose the UNDERSTANDING COMPUTERS course, you will have classes_____.

A. from Monday to Sunday    

B. from Monday to Friday

C. on Wednesday and Saturday      

D. on Saturday and Sunday

2. The STOP SMOKING course will last_____.

A. for half a day          

B. for three hours    

C. for a week            

D. for four weeks

3. Mr. Black works every morning and evening, but he wants to take part in one of the three courses.

Your suggestion is_____.

A. TYPING                  

B. UNDERSTANDING COMPUTERS

C. STOP SMOKING              

D. all the courses

4. If you want to learn about computers and at the same time you want to improve your typing, you

will pay_____.

A.  $75        

B.  $150      

C.  $115            

D.  $235

5. The special difference between the TYPING course and the other two is_____.

A. people with different skill levels may learn at different speed

B. you will take a test after the course

C. you will pay the fee before practising

D. you will pay less money

肾后性肾衰竭首选检查（） |血容量不足可表现为（）

A.补液试验后尿量无变化

B.双肾B超，KUB

C.逆行肾盂造影

D.尿中大量红细胞管型

E.尿比重>1.030，尿钠<20mmol/L

下列各项指标中，反映企业营运能力的有（）。

A.存货周转天数

B.应收账款周转次数

C.已获利息倍数

D.市盈率

E.现金比率

证券是指（）。

A.各类记载并代表一定权利的法律凭证

B.各类证明持有者身份和权利的凭证

C.用以证明或设定权利而做成的书面凭证

D.用以证明持有人或第三者有权取得该证券拥有的特定权益的凭证

为甲状腺全切术后的患者进行健康捧导，关于甲状腺素的服用方法，不包括

A．每天按时服药
B．出现畏寒、烦躁、乏力时及时报告医务人员
C．出现心慌时增加剂量
D．随年龄调整剂量
E．密切观察服药后病情变化