国际上通行的工程咨询服务的采购方式有两类：( )和直接委托方式。 A．公开招标方式

小文同学学习了有关物理知识后，设想制作一个电动充气泵．她画出了如图所示的结构示意图，图中E为电流大小和方向都不断变化的交流电．

（1）你认为小文的设想运用了哪些物理知识？

（2）若电流从电源的a端流入时，小磁铁向下运动，则此时电磁铁的上端为 _________ 极，小磁铁的下端为 _________ 极．

警示语为“请仔细阅读药品使用说明书并按说明使用”的药品是（）

A．处方药

B．非处方药

C．乙类非处方药

D．甲类非处方药

E．传统药

阅读理解。

     In Kansas City, Missouri, a computer helps firefighters. The computer keeps information about every one

of the 350 000 street addresses in the city. When firefighters answer a call,the computer will give them

important information about the burning building: its position, size and so on. In fact, the computer system has

a lot of ways of helping firefighters with the problems facing them. For example, it can give medical information about invalids (伤残者) living in a burning building. With this information, the firefighters can take special care

to find these sick persons and save them. The Kansas City computer system also keeps a medical record of

each of the city's 900 firefighters. This kind of information is especially useful when a fireman is injured. With

this medical information, doctors can treat the injured firefighters more quickly and easily.

     The firefighters themselves need the computer's help. They know about possible dangers and prepare for

them. Many times the computer information helps to save lives and property. Sometimes the lives are those of

firefighters themselves!

1. Missouri is most likely the name of _____.

A. a street where firefighters work

B. a city smaller but more famous than Kansas

C. one of the states of America

D. the centre of the computer system

2. The computer can give ____.

A. all useful information about the city

B. good information about everybody in the city

C. useful information about every street address in the city

D. nice pictures about each building on fire

3. The computer system can _____.

A. give the firemen important help in many ways

B. have a few ways of helping the firefighters

C. hardly give any useful information for the firefighters

D. put out every fire quickly and safely

4. The firefighters know that the invalids in a burning building _____.

A. will not save themselves

B. want information from the computer

C. cannot see the dangers

D. need special help

以下的高尔夫选手中谁在美巡赛奖金榜上仅次于泰格·伍兹，列第二位？（）

A.菲尔-米克尔森

B.维杰·辛格

C.崔京周

D.金河珍

汽轮机部件受到热冲击时的热应力，取决于蒸汽与金属部件表面的温差和蒸汽的放热系数。