问题 问答题 简答题

3、4号机密封油系统油净化装置投运的操作?

答案

参考答案:

1、联系电气对密封油净化装置输入油泵、输出油泵、A、B真空油泵、风扇摇绝缘,合格后送上电源;

2、打开总电源开关,此时电源指示灯亮;

3、开启输入油泵进、出油手动门,为了控制进油量大小,进油手动二次门应先开启一半;

4、检查冷却器大罐内无积油、积水,如有积油、积水应将其放完后,方可投运系统,按大罐照明灯亮,检查大罐下视窗油位正常;

5、关闭真空破坏门,检查真空油泵油位正常,启动任意一台真空泵运行,缓慢打开运行真空泵的进口门,注意防止真空泵喷油;检查大罐真空缓慢上升;

6、检查大罐下视窗油位,按下输入油泵控制按钮,启动输出油泵运行,注意大罐下视窗油位变化,检查下视窗内进油正常,如果油位低,输入油泵自动运行,并自动开启输入油泵出口电磁阀进油;

7、检查大罐进油正常;如大罐进油不正常应立即停止输出油泵运行,输入油泵自动停止运行;同时检查输入油泵电磁阀是否动作不正常;

8、如果大罐油位上升,应通过输入油泵进油手动二次门进行细调,防止油沫上升到上视窗,造成真空泵喷油;

9、观察大罐内进油,如果大罐内上视窗油沫较多,应稍开真空破坏门控制油位在下视窗可见范围内后,关闭真空破坏门;

10、如真空油泵出口排出大量油,应立即按“紧停”按钮停止系统运行,待查明原因,并将冷却罐内油放完后,方可重新投运系统;

11、待大罐内油位稳定后,启动冷却风扇运行,检查风扇转向应正确。

多项选择题
阅读理解

The $ 11 billion self – help industry is built on the idea that you should turn negative thoughts like “ I never do anything right” into positive ones like “I can succeed.” But was positive thinking advocate Norman Vincent Peale right? Is there power in positive thinking?

Researchers in Canada just published a study in the journal Psychological Science that says trying to get people to think more positively can actually have the opposite effect: it can simply highlight how unhappy they are.

The study's authors, Joanne Wood and John Lee of the University of Waterloo and Elaine Perunovic of the University of New Brunswick, begin by citing older research showing that when people get feedback which they believe is overly positive, they actually feel worse, not better. If you tell your dim friend that he has the potential of an Einstein, you're just underlining his faults. In one 1990s experiment, a team including psychologist Joel Cooper of Princeton asked participants to write essays opposing funding for the disabled. When the essayists were later praised for their sympathy, they felt even worse about what they had written.

In this experiment, Wood, Lee and Perunovic measured 68 students' self-esteem. The participants were then asked to write down their thoughts and feelings for four minutes. Every 15 seconds, one group of students heard a bell. When it rang, they were supposed to tell themselves, "I am lovable."

Those with low self-esteem didn't feel better after the forced self-affirmation. In fact, their moods turned significantly darker than those of members of the control group, who weren't urged to think positive thoughts.

The paper provides support for newer forms of psychotherapy (心理治疗) that urge people to accept their negative thoughts and feelings rather than fight them. In the fighting, we not only often fail but can make things worse. Meditation (静思) techniques, in contrast, can teach people to put their shortcomings into a larger, more realistic perspective. Call it the power of negative thinking.

小题1:What do we learn from the first paragraph about the self-help industry?

A.It is a highly profitable industry.

B.It is based on the concept of positive thinking.

C.It was established by Norman Vincent Peale.

D.It has yielded positive results.小题2:What is the finding of the Canadian researchers?

A.Encouraging positive thinking many do more harm than good.

B.There can be no simple therapy for psychological problems.

C.Unhappy people cannot think positively.

D.The power of positive thinking is limited.小题3:What does the author mean by "you're just underlining his faults" in the third paragraph?

A.You are not taking his mistakes seriously enough.

B.You are pointing out the errors he has committed.

C.You are emphasizing the fact that he is not intelligent.

D.You are trying to make him feel better about his faults.小题4:It can be inferred from the experiment of Wood, Lee and Perunovic that        .

A.it is important for people to continually keep their self - esteem

B.self – affirmation can bring a positive change to one’s mood

C.forcing a person to think positive thoughts may lower their self - esteem

D.people with low self – esteem seldom write down their true feelings