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问题 单项选择题

46岁。因患类风湿关节炎长期服泼尼松30mg/d。今起出现发热，伴气急、咳嗽、痰多，肺部闻及湿啰音，胸片示双肺弥漫性渗出性改变，动脉血气分析示PaO245mmHg，PaCO235mmHg，拟诊ARDS。

为改善低氧，下列哪一项措施是最合适的

A．气管切开后机械通气
B．经口气管插管机械通气
C．面罩吸氧 D．鼻导管吸氧
E．BiPAP辅助通气

答案

参考答案：B

单项选择题

During our two months on the road, Bennett and I had a really (1) experience with a good, honest (2) and some helpful mechanics.

We were driving east on Highway 10 when our "chick engine" light came on. We limped of a(n) (3) into Las Cruces. We had a real car (4) Bennett nursed the ear into a local garage. By this time the car was missing so (5) it was shaking all over. This was the (6) time to arrive at a garage—late Friday afternoon. Service adviser Scott was busy (7) paper work and customers as we (8) our problems. (9) he was already "ten cars behind", he told us to pull the car into the garage.

Lincoln, who we later (10) was one of the two motor technicians, took (11) of our car repairing. He and Scott and some other mechanics stayed several hours after closing, (12) the car.

Early the next morning (the shop was officially closed on Saturdays), Lincoln finally located the (13) and fixed it easily within only (14)

Later Scott (15) out to us that it was our attitude that helped. "You didn’t come into the place demanding this or that. You showed an (16) of our problems on a busy Friday afternoon. Customer’s attitude means a lot. " He was right in some way, customers should show (17) and understanding to people who (18) them. (19) people were extremely busy, they found way to at least try and help when they are met with politeness.

The pleasant experience I had shows that (20) for other people can always help.

19（）

A.Even if 

B.Even as 

C.Even so 

D.Even then
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单项选择题

如果现金流出或流入不是发生在计息周期的期初或期末，而是发生在计息周期的期间，为了简化计算，公认的习惯方法是将其代数和看成是在计算周期末发生，称为( )。

A．成熟市场法
B．矩阵法
C．综合评价法
D．期末惯例法
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