右图是胸腔和肺的示意图,当肋间肌和膈肌收缩时,图中a、b、c三部位的压力由大到小

题型:选择题

问题:

右图是胸腔和肺的示意图,当肋间肌和膈肌收缩时,图中a、b、c三部位的压力由大到小依次是(  )

A.abc

B.cab

C.acb

D.bca

考点:演示实验:模拟膈肌的运动
题型:选择题

把一个带电量为+q的检验电荷放在电场中的P点,测得P点的电场强度大小为E,场强的方向向东,有关P点的场强的说法,正确的是

A.若把-q的检验电荷放在P点,测得P点的场强大小仍为E,方向向西;

B.若把2q的检验电荷放在P点,测得P点的场强大小为2E,方向向东;

C.若在P点不放电荷,那么P点的场强为零;

D.只要P点在电场中的位置确定,它的场强应是一个确定值。

题型:选择题

平原地区成年男性血红蛋白正常参考值是()

A.100~140g/L

B.140~170g/L

C.120~160g/L

D.110~150g/L

E.170~200g/L

题型:选择题

We can make mistakes at any age. Some mistakes we make are about money. But most mistakes are about people. One might say, "Did Jerry care when I broke up with Helen " "When I got that great job, did Jim really feel good about it, as a friend " Or "Did he envy my luck " "And Paul — why didn’t I pick up that he was friendly just because I had a car " When we look back, doubts like these can make us feel bad. But when we look back, it’s too late.
Why are we wrong about our friends or our enemies Sometimes what people say hides their real meaning. And if we don’t really listen, we miss the feeling behind the words. Suppose someone says to you, "You’re a lucky dog." Is he really on your side If he says, "You’re a lucky guy" or "You’re a lucky gal," that’s being friendly. But if he says, "You are a lucky dog." There’s a bit of envy in those words. Maybe he doesn’t see it himself. But bringing in the dog he put you down a little. What he may be saying is that he doesn’t think you deserve your luck.
"Just think of all the things you have to be thanking for" is another noise that says one thing and means another. It could mean that the speaker is trying to get you to see your problem as part of your life as a whole. But is he Wrapped up in this phrase is the thought that your problem isn’t important. It’s telling you to think of all the starving people in the world when you have not got a date for Saturday night.
How can you tell the real meaning behind someone’s words One way is to take a good look at the person talking. Do his words fit the way he looks Does what he says square with his tone of voice, his posture, the look in his eyes Stop and think. The minute you spend thinking about the real meaning of what people say to you may save another mistake.
Therefore, when you hear someone saying, please try to know what he really means. Don’t just listen to what he says with your ears but feel the words he uses with your head. In this way, you may make less mistakes.

In the first paragraph, the writer recalls some things that happened between him and his friends. He ______.

A.feels happy, thinking of how nice his friends were to him

B.feels he may not have read his friends true feelings correctly

C.thinks it was a mistake to have broken up with his girl friend, Helen

D.is sorry that his friends let him down

题型:选择题

操作系统的发展过程是

A.设备驱动程序组成的原始操作系统、管理程序、操作系统

B.原始操作系统、操作系统、管理程序

C.管理程序、原始操作系统、操作系统

D.管理程序、操作系统、原始操作系统

题型:选择题

“吃了人家的嘴软,拿了人家的手短”从反面说明了会计职业道德中客观公正的重要性。()

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