问题 问答题 论述题

执行安全措施的要求是什么?

答案

参考答案:

(1)热力设备检修需要断开电源时,应在已拉开的断路器、隔离开关和检修设备控制开关的操作把手上悬挂“禁止合闸,有人工作!”的警告牌,并取下操作保险。

(2)热力设备检修需要电气运行值班人员做断开电源安全措施时,如热机检修工作负责人不具备到配电室检查安全措施的条件,必须使用停电联系单取代此项检查。

(3)热力设备、系统检修需要加堵板时,应统一按以下要求执行:

1)氢气、瓦斯及油系统等易燃、易爆或可能引起人员中毒的系统检修时,必须在关严有关截门后立即在法兰上加装堵板,并保证严密不漏;

2)汽、水、烟、风系统,公用排污、疏水系统检修时,必须将应关闭的截门、闸板、挡板关严加锁,挂警告牌。如截门不严,必须采取关严前一道截门并加锁,挂警告牌或采取经车间批准的其他安全措施;

3)在1)、2)两项中,凡属电动截门的电源断开。热机控制执行元件的操作能源也应可靠地切断。

阅读理解

Baekeland and Hartmann report that the “short sleepers” had been more or less average in their sleep needs until the men were in their teens. But at about age 15 or so, the men voluntarily began cutting down their nightly sleep time because of pressures from school, work, and other activities. These men tended to view their nightly periods of unconsciousness as bothersome interruptions in their daily routines.

In general, these “short sleeps” appeared ambitious, active, energetic, cheerful, conformist(不动摇) in their opinions, and very sure about their career choices. They often held several jobs at once, or workers full-or part-time while going to school. And many of them had a strong urge to appear “normal” or “acceptable” to their friends and associates.

When asked to recall their dreams, the “short sleepers” did poorly. More than this, they seemed to prefer not remembering. In similar fashion, their usual way of dealing with psychological problems was to deny that the problem existed, and then to keep busy in the hope that the trouble would go away.

The sleep patterns of the “short sleepers” were similar to, but less extreme than, sleep patterns shown by many mental patients categorized as manic(疯人).

The “long sleepers” were quite different indeed. Baekeland and Hartmann report that these young men had been lengthy sleeps since childhood. They seemed to enjoy their sleep, protected it, and were quite concerned when they were occasionally deprived of their desired 9 hours of nightly bed rest. They tended to recall their dreams much better than did the “short sleepers.”

Many of the “long sleepers” were shy, anxious, introverted (内向), inhibited (压抑), passive, mildly depressed, and unsure of themselves (particularly in social situations). Several openly state that sleep was an escape from their daily problems.

64. According to the report,______.

A) many short sleepers need less sleep by nature

B) many short sleepers are obliged to reduce their nightly sleep time because they are busy with their work

C) long sleepers sleep a longer period of time during the day

D) many long sleepers preserve their sleeping habit formed during their childhood

65. Many “short sleepers” are likely to hold the view that _____.

A) sleep is a withdrawal from the reality

B) sleep interferes with their sound judgement

C) sleep is the least expensive item on their routine program

D) sleep is the best way to deal with psychological troubles

66. When sometimes they cannot enjoy adequate sleep, the long sleepers might ____.

A) appear disturbed

B) become energetic

C) feel dissatisfied

D) be extremely depressed

67. Which of the following is Not included in the passage?

A) If one sleeps inadequately, his performance suffers and his memory is weakened

B) The sleep patterns of short sleepers are exactly the same as those shown by many mental patients

C) Long and short sleepers differ in their attitudes towards sleep

D) Short sleepers would be better off with more rest

单项选择题