板厚度一般为板跨度的( )，且不小于( )mm。A．1/14～1/8；60 B．

阅读理解。

     Did you know the story about Tom? It was a true story. Tom was an English boy, and he didn't like

soap (肥皂) and water. Three or four times a day his mother said to him, "Tom, your hands are dirty

(脏的) again. Go and wash them. "But Tom never really washed them well. He only put them in the

water for a few seconds and then took them out again.

     Tom's uncle and aunt lived in another city. One day they came to stay with Tom's parents, and they

brought their small son, Ted, with them. Ted was one year younger than Tom and he didn't like soap or

water, either (也).

     The boys sat with their parents for a few minutes, and then they went outside. When they were

together, Tom looked at Ted's hands and said proudly (骄傲地), "My hands are dirtier than yours!"

     "Of course they are. "Ted answered angrily (生气地), "You are one year older than me!"

1. Tom's mother told him to wash his hands ______a day．

A . only three times    

B. more than four times

C. three or four times

D. five times

2. Whose hands were a little cleaner, Tom's or Ted's?

A. Tom's    

B. Ted's

C. Both (都) Tom's and Ted's

D. Neither of (都不) them．

3. From this story we learn ______．

A. Tom liked soap and water    

B. Ted liked soap and water

C. Both Tom and Ted liked soap and water

D. Neither of them liked soap or water

4. When Tom saw Ted's hands, he felt ______．

A. happy    

B. proud    

C. sorry

D. afraid

5. How many people are there in the story?

A. Less than four．

B. Four．    

C. Five．

D. More than five．

旅游中，下面哪种行为是不提倡的（）。

A.爱护花草木，不随意采摘，不惊扰动物

B.不随意食用野生动物和采食野果、野菜、野蘑、野菌

C.购买受保护和濒危的动植物当纪念品

D.不随意在文物古迹上刻划，不乱丢垃圾

男性，70岁，以"反复咳嗽、咳痰20年，气短、下肢水肿10年，加重2周，神志不清1天"为主诉入院。每年冬季发作，咳白色黏痰，近2周上述症状加重，咳黄痰，出现明显呼吸困难，不能平卧。1天前因头痛、烦躁、夜间不能睡觉，家属给予地西泮2片，服后即入睡不醒。既往史：吸烟30年，20支／日。

对于该患者的治疗，下列哪些是正确的（）

A.大量补液

B.控制肺部感染

C.保持呼吸道通畅

D.补充碳酸氢钠

E.必要时应用利尿剂和强心剂

F.给予低流量、低浓度持续吸氧

G.给予高流量、高浓度持续吸氧

H.大剂量糖皮质激素治疗

I.镇静止咳

Windows操作系统中，当屏幕上有两个以上的窗口时，对活动窗口的正确说法是（）。

A.可以有多个活动窗口

B.最多只有一个活动窗口

C.被其他窗口盖住的窗口

D.标题栏的形状与众不同的窗口

从制冷压缩机性能曲线，可由（）确定制冷量。

A.蒸发温度

B.蒸发温度和吸气过热度

C.蒸发温度和冷凝温度

D.蒸发温度和供渡过冷度