凡用惰性气体置换过的设备，人入罐前必须用空气置换出惰性气体，_爱下问搜题

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问题单项选择题

凡用惰性气体置换过的设备，人入罐前必须用空气置换出惰性气体，然后进行取样分析，当氧含量大于（）%时人方可入罐。

A.10

B.14

C.18

D.22

答案

参考答案：C

单项选择题

患儿，3岁，初起发热，恶风，有汗热不解，口渴引饮，咳嗽痰黏，咽部红赤，舌红，苔薄黄或薄白而干，脉浮数。方药选

A．三拗汤加减
B．银翘散合麻杏石甘汤加减
C．三黄石膏汤加减
D．葶苈大枣泻肺汤合五虎汤加减
E．沙参麦冬汤加减

填空题

Questions 47 to 56 are based on the following passage.

Lance Armp is thirty-three years old and is one of the best athletes in the world. Scientists say his body operates better than the (47) person. For example, his heart can (48) more than two hundred times a minute. It pumps an extremely large amount of blood and oxygen to his legs.
Edward Coyle, head of the Human Performance Laboratory at the University of Texas in Austin, tested Armp five times from 1992 until 1995. Each time, the cyclist rode a (49) bike for twenty-five minutes with the work rate increasing every five minutes.
Scientists measured Armp’s (50) against the amount of oxygen he breathed. Doctor Coyle discovered an 8% increase in Armp’s muscle power. Doctor Coyle (51) Armp might have developed more of a certain kind of muscle during his seven years of training.
Doctor Coyle also discovered that Armp was able to reduce his body weight and body fat before his Tour de France victories. This enabled him to increase his power in relation to his body weight by 18%. Doctor Coyle says the results of the (52) show that long-term training has more of an effect on athletes than scientists thought.
Lance Armp is (53) in another way. In 1996, when he was twenty-five, he discovered he had cancer of the testicles (睾丸), which had spread to his lungs and brain. Armp received chemical (54) and several operations on his brain. After he (55) , he began training again in 1998. The next year he won his first Tour de France race. Many people who have (56) and are living with cancer believe he is a hero.

A) bite
B) study
C) average
D) suspected
E) exercise
F) beat
G) unique
H) survived
I) performance
J) recovered K) fixed L) departed
M) frequentN) treatment O) breakthrough