试分析门机松轨灯亮,但操作行走手柄门机没反映的故障原因及排除方法。

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问题:

试分析门机松轨灯亮,但操作行走手柄门机没反映的故障原因及排除方法。

考点:起重机操作证考试门座式起重机司机(中级)门座式起重机司机(中级)题库
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如果反比例函数y=
k
x
的图象经过点A(2,y1)与B(3,y2),那么
y1
y2
的值等于______.
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将一个预先作好的“ICE"形状的镍钛合金,拉坏形状后,只要在热水中浸泡,其便会恢复原来形状。下列说法正确的是

A.记忆合金的形状变化属于化学变化

B.合金的熔点一般比组分中的任何一个来得高,硬高比组分中的任何一个要小

C.利用形状记忆合金在医疗上可用来接断骨等,在日常生活中可制眼镜框架等

D.镍钛合金能记忆形状的主要原因是记忆合金晶体在慢慢的加热过程中,每一个金属原子会有充分的时间填满每一个空隙,此时它的排列组合是最紧密的

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阅读理解

     Doctors say anger can be an very harmful emotion(情绪)unless you learn how to deal with it. They

warn that angry feelings can lead to heart disease,  stomach problems,  headaches,  emotional problems

and possibly cancer.

     Anger is a normal emotion that we all feel from time to time. Some people express anger openly in a

calm reasonable way. Others burst with anger,  losing control of themselves. But other people repress

their anger. They cannot or will not express it.

     For years many doctors thought that repressing anger was more dangerous to a person's health than

expressing it. They said that when a person is angry,  the brain gives off the same hormones(激素)that

are produced during tense situations. They speed the heart rate,  raise blood pressure,  or sugar into the

blood and narrow the blood vessels(脉管)to the interstices(空隙). In general,  the person feels excited

and ready to act.

     Doctors said that repressing these feelings only makes the feelings continue. And this can lead to

many medical problems. Doctors thought a person could prevent these problems by letting the anger out

by expressing it freely. But recently some doctors held a different view. They said that people who

express anger repeatedly and violently did become,  in fact,  more and not less angry.They said this, too,

can cause medical problems.

     Some doctors say that both repressing and expressing anger can be dangerous. They believe that

those who express anger violently may be more likely to develop heart disease,  and they believe that

those who keep their anger inside may face a greater danger of high blood pressure.

     Doctors say the solution(解决办法)is learning how to deal with anger. They say the first step is to

admit that you are angry and to recognize the real cause of the anger,  and then decide if the cause is

serious. If it is,  they say: "Do not express your anger while angry. Wait until your anger has cooled down

and you are able to express yourself calmly and reasonably. "

1. What does the phrase" repress anger" mean in Paragraph 2?

A. Forget one's anger.                    

B. Express one's anger openly.

C. Treat one's anger calmly and reasonably.

D. Keep one's anger inside.

2. When you get angry,  which of the following should you do for the good of health?

A. Repressing the anger.          

B. Expressing the anger.

C. Learning how to make a deal.  

D. Treating the anger properly.

3. What is the central topic of this passage about?

A. The different ways of dealing with anger.

B. The dangers of anger and the solution.

C. New medical discoveries.

D. The argument between the new and old views about anger.

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流体在管道中流经窄小截面时,由于产生局部阻力损失使流体压力下降,这种现象称()。

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社会总产品的各个组成部分的价值转化为货币形式以后,再转化为所需要的产品属于()

A、价值补偿

B、实物替换

C、劳动力的补偿

D、资金的补偿

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