用交换机对网络（一个冲突域的网络）进行分段，可以达到什么效果（）A、增加了冲突域的数

阅读理解。

     A small man goes to the cinema. He buys  a  ticket  and  goes  in. But after two or three minutes he

comes out. He buys a second ticket and goes in again.  After  a  few  minutes  he  comes out again and

buys a third ticket. Two or three minutes after that he comes out a third time and asks for another ticket.

But the girl says to him, “Why are you buying all these? Are  you  meeting friends  in the cinema all the

time?”“No, I'm not doing that.” the small man says, “But  a  big  woman  always  stops me at the

door and tears( 撕掉 ) my tickets up.”

1. The small man goes to the cinema to _______.

A. see a film

B. watch TV

C. meet his friends

D. have a rest

2. The small man______ a ticket. 

A. takes    

B. buys    

C. brings    

D tears

3. After a few minutes the small man________ again and buys a third ticket.

A. gets    

B. tears up.    

C. comes out    

D goes in

4. “No, I'm not doing that.” Means_______ .

A. He isn't seeing a film                

B. He isn't meeting his friend

C. He wants to buy the tickets for the big woman

D. the big woman doesn't let him in

5. From the story we can guess________.

A. the small man is the first time to go to a cinema.

B. the big woman at the door doesn't like him.

C. the small man is afraid of（害怕） the big woman.

D. the small man doesn't want the big woman to tear his ticket up.

驱汞治疗的首选药物为（）

A.硫代硫酸钠

B.依地酸钙钠

C.阿托品

D.普鲁士蓝

E.二巯丙磺钠

45岁的王女士因不明原因的轻度左胸肋渗出液住院，其胸部放射线检查无其他肺部异常发现，当你评估时，预期发现下列哪一项

A．胸部直径异常大
B．呼气延长
C．轻微胸部活动
D．气管偏离患侧
E．气管移向患侧

左边给定的是纸盒的表面，下面哪一项能由它折叠而成（）

A.A

B.B

C.C

D.D

根据游乐设施的危险程度，纳入安全监察的游乐设施划分为（）。

A. A、 B二级；

B. A、 B 、 C三级；

C. A、 B 、 C 、 D四级；

D. A 、 B、 C 、 D 、 E五级。