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问题 单项选择题

依靠在气缸中做往复式回转运动的活塞，使气体体积缩小而提高压力的压缩机是（）压缩机。

A.容积式

B.离心式

C.轴流式

D.喷射式

答案

参考答案：A

单项选择题 共用题干题

四十四岁，男，中学教师，体型肥胖，1周前健康检查时发现尿糖（++），医生建议他住院检查。

体格检查最可能的发现为（）。

A.血压偏高

B.心脏扩大

C.眼底检查动脉硬化

D.腱反射减弱

E.无任何阳性体征
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补全对话，情景问答
根据对话内容，从A-G中选出能填入空白处的最佳选项，补全对话，有两项多余。
A: Hello, Mrs Green. I'd like to be a volunteer. Can you help me?
B: Sure. 1            
A: Well, I like working with kids.
B: 2             We need someone to help teach kids basketball.
A: No, I don't really like basketball. 3            
B: Sure. There's a job cleaning up the parks. It's every Sunday.
A: 4            I help take care of my grandmother on Sundays.
B: I see. Here's another job. Do you know how to fix up bicycles?
A: Yes, I do. Maybe this is a good one. When do I start?
B: How about today?
A: 5            
A. Is there anything else?               
B. That's all right.
C. That's too bad.                          
D. Do you know how to play basketball?
E. All right.                                  
F. Shall we go to play basketball?
G. What kind of volunteer work would you like to do?
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