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问题 单项选择题 A1/A2型题

下列不是呼吸机撤离的标准的是（）

A.临床症状稳定或改善

B.FiO2<40%

C.PaO2>60mmHg或PaCO2<50mmHg

D.自主潮气量>5ml/kg

E.呼吸浅快指数>105bpm/L

答案

参考答案：E

解析：呼吸浅快指数<80提示易于脱机，80～105需谨慎脱机，超过105则难于脱机。

补全对话，情景问答
选择合适的句子完成对话（有一项多余）。
A: How about you?
B: What do you think of it?
C: Education is very important    
D: Because I want to help the poor children
E: Which is your favorite charity?  
F: Because it is a charity that helps blind people.
A: I used to spend all my pocket money on stickers . 1_______
B: I used to buy some story books . Now , I try to save some money to donate to charities .
A: 2_______
B: ORBIS. 3_______ I think it is very sad if you can't see anything . What about you ?
A: I often donate money to UNICEF . 4_______
B: Sometimes I also donate money to it with my classmates. 5_______
A: Yes, let's save our money to help the people in need .
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填空题

内循环滚动螺旋中，螺母的每一个螺纹装一个（），滚珠在同一圈滚道内形成封闭循环回路。
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