下利清谷

Nursing measures for the client who has had an MI include helping the client to avoid activity that results in Valsalva’s maneuver. Valsalva’s maneuver may cause cardiac dysrhythmias, increased venous pressure, increased intrathoracic pressure, and thrombi dislodgment. Which of the following actions would help prevent Valsalva’s maneuver

A. Have the client drink fluids through a straw.
B. Have the client avoid holding her breath during activity.
C. Have the client assume a side-lying position.
D. Have the client clench her teeth while moving in be

以20米/秒的初速度将一物体由足够高的某处水平抛出，当它的竖直速度跟水平速度大小相等时经历的时间为         ；这时物体的速度方向与水平方向的夹角         ；这段时间内物体的位移大小           m。（g取10m/s²）

第三部分：阅读理解（共15小题，每小题2分，满分30分）

阅读下列短文，然后从各题所给的四个选项（A、B、C、D）中，选出最佳选项。

Thirty years ago I worked in a company. My job was to sell the cars. I was young and strong and I had been to most parts of the world and I spent one fifth of my time in the trains or planes. I liked such a life and sometimes I called myself “traveler”.

But one day I got into trouble. It was a cold morning. It blew heavily and the ground was covered with thick snow outside. I was still in bed though it was nine. I finished a long journey the day before and decided to have a good rest. Suddenly the telephone rang and my manager told me to fly to New York to take part in an important meeting. I had to get up and after a quick breakfast I hurried to the airport. The taxi went slowly and I missed the first flight. I had to take the next one. It meant I would wait for nearly five hours in the waiting-room. But five hours later a passenger said the information showed there was a bomb in our plane and the policemen were looking for it. And another five hours passed and most passengers lost their patience before we were allowed to get on the plane. At the entrance each passenger and their baggage had to be examined. A young man who seemed a soldier shouted at the policemen at the entrance, “If I had a gun in my baggage, I would shoot you two hours ago!”

56．The writer called himself “traveler” because he________

A．sold cars for his company       B．often took trains and cars

C．traveled all over the world       D．liked traveling in many places

57．He didn’t get up until the phone rang because he________

A．felt very cold outside           B．wanted to have a rest that day

C．was going to have a meeting     D．was waiting for the manager’s call

58．The taxi went slowly because________

A．there was much snow on the road

B．it was very cold that morning

C．the driver didn’t know he would fly to New York

D．the manager told him not to hurry

59．The young man became angry because he________.

A．wouldn’t be examined

B．had a gun in his baggage

C．waited for a long time at the airport

D．hated the policemen at the entrance

机械弯曲破坏负荷试验一般应在（）℃的室温下进行。

A.10~20

B.10~35

C.15~25

D.15~35

为了预防感染艾病毒，不能与别人共用的用具有剃须刀、刮脸刀、注射针管等。