女性，21岁，孕34周，超声诊断：羊水偏少。超声诊断标准是羊水深度小于（）。 A.2

下列变化中属化学变化的是（　　）

A．铁水铸成锅

B．植物光合作用

C．酒精挥发

D．蜡烛受热熔化

艾滋病的主要致死原因是

A．急性脑炎

B．肿瘤

C．卡氏肺囊虫肺炎

D．恶液质

Most of us use the telephone several times a day to talk with friends or make social arrangements(安排). These calls are usually quite easy and require little planning.

Using the telephone for business purpose is different. In any organization the person on the telephone represents the company and gives an impression of the firm to the outside world.

If you want to ensure good public relations, you need to master effective telephone techniques.

You should try to give an impression of an efficient, friendly, progressive company eager to give good service.

Before calling

Choose the right time. Consider the cost, urgency and convenience. When calling overseas, you need to consider the time difference.

Check the number. A great deal of money is wasted each year on dialing wrong numbers.

Plan your call. Make a list of points and questions to be raised.

Be prepared. Gather any files, papers or information that may be needed during the call. It is unprofessional to have to say “Hold on while I look for that.”

If you have to ask a caller to hold on, keep going back and assuring him/her that you will be as quick as possible.

Avoid interruptions. Call at a time when you are unlikely to be distracted(分心).

During the call

Be courteous, polite. Make time for suitable greetings like “How are you today, Jim?” and “Did you enjoy your holiday”?

Put a smile in your voice. Remember, your caller can not see you, so use intonation to good effect and try to sound confident, decisive, helpful, and interested.

Check your notes. Look back at your notes to ensure that you have covered everything and quote figures and other data correctly.

Get feedback. Make sure the caller understands the message correctly, especially deadlines and actions that are involved.

Be courteous. Finish by thanking the caller for his or her time and trouble.

After the call

Make notes. Let it become a habit to make notes of the call and place them in an appropriate file.

Take actions. If you need to send a letter of confirmation or inform someone in your organization about any details of the call, do it immediately so that you do not forget important points.

小题1: Before calling, you have to _____.

A．stay at your company only

B．learn important data and figures by heart

C．get things ready for the communication

D．choose the right time and place小题2: During the call, it is unsuitable to _____.

A．be decisive

B．be heard in low spirits

C．check your notes

D．get feedback小题3: What does the underlined word “courteous” in the passage mean?

A．Polite.

B．Active.

C．Effective.

D．Correct.

高危妊娠时选择终止妊娠的时间应取决（）.

A.宫颈成熟度

B.宫底高度

C.胎动次数

D.胎盘功能和胎儿成熟度

E.胎儿电子监测

计算题：如图所示，有一根混凝土梁重100KN，用两根钢丝绳进行吊装。求每根钢丝绳上受多少力？