【判断题】
管道色标的习惯用法是：自来水管道是白色，蒸汽管道是黑色，压力管道为黄色，消防管道为红色。
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相关试题
【判断题】
绿色用于所有的提示标志包括道路上的提示标志。
【判断题】
危险源识别的常规状态是指正常生产过程中的周期性的作业或活动。
【判断题】
厂内危险机器和坑沟周边的警戒线一般设置成红色。
【判断题】
行车道中线、安全帽、城市轨道交通站台的安全线一般设置成黄色。
【判断题】
危险源识别的潜在的紧急情况是指行车、火灾、爆炸等事故发生时或发生后进行抢险救援过程中存在的危险。
【判断题】
提示标志是要求人们必须做出某种动作或采用防范措施的图形标志。
【判断题】
危险源是指可能造成人员伤害，财产损失，或这些情况组合的根源或状态。
【判断题】
危险源识别是确认危险源的存在并确定其特性的过程，实质是找出组织中存在的人的不安全行为，物的不安全状态，作业环境中存在的危险因素及管理缺陷。
【判断题】
由于火灾、爆炸、严重的泄漏、碰撞及事故的后果灾难性的，不可控制的，因此这种危险源的存在是非常规的状态。
【判断题】
处于潜在的紧急状态的危险源往往是不可预见其后果的。
【判断题】
处于非常规状态的危险源都是发生在异于常规周期性地或临时性的作业活动中。
【判断题】
危险源识别范围就在城市轨道交通覆盖范围内工作区域。
【判断题】
已识别的危险源的风险等级一共有四个级别。
【判断题】
安全标志是由安全色、图形符号和文字所构成，用以表达特定的安全信息。
【判断题】
组合标志就是辅助标志必须与安全标志同时使用在一个矩形载体上。
【判断题】
在同一矩形载体上含有三个或三个以上的安全标志并且有相应辅助标志的标志称多种标志。
【判断题】
警告标志:几何图形是正三角形边框，图形符号、几何图形为黑色，背景色衬边色为黄色。
【判断题】
充有氧气的气瓶颜色是淡蓝色，字样是黑色，上面写着一个“氧”字。
【判断题】
在电气设备色标中，直流正极为蓝色、直流负极为红色。
【判断题】
安全色其作用是使人们能够迅速注意到影响安全的对象或场所，提醒人们注意，以防发生事故。
【判断题】
受电弓的支架带电部分红色，表示高压危险，禁止触摸，其中红色表达着一种禁止标志的意思。
【判断题】
在安全色中红色仅表达着禁止、停止这两个意思。
【判断题】
白色既可以用于安全标志红色、绿色、蓝色的背景色也可以用于文字和图形符号。
【判断题】
黑色用于安全标志的文字，图形符号和警告标志的几何边框。
【判断题】
根据国家有关规定，安全线用白色，宽度不小于50mm。
【判断题】
如果一个地方发生行车重大、大事故，就会影响一线、一片，甚至波及整个运营生产。这体现了运营安全过程复杂，安全工作需要贯穿始终。
【判断题】
灭容器内的可燃液体火灾时应将灭火器的喷射流直接喷射在燃烧液面上。
【判断题】
屏蔽门五种控制方式里紧急级控制的优先级最高。
【判断题】
运营移动设备主要包括通信设备、电动车辆、信号设备。
【判断题】
我们所学的安全色不适用灯光信号或荧光颜色以及为其他目的使用的颜色。
【判断题】
城市轨道交通运营安全管理的本质是充分发挥人的积极性和创造性，调动一切积极因素，促使各种矛盾向有利于运营安全的方面转化。
【判断题】
对于已识别的危险源可以采用是非判断法进行风险评价。
【判断题】
辅助标志与安全标志同时使用在一个矩形载体上称为多重标志。
【判断题】
管理因素是造成事故的根本原因和直接原因。
【判断题】
在使用干粉灭火器灭火前，需先把灭火器上下颠倒几次。
【判断题】
进行危险源识别时不必进行分类识别，直接划分识别单元即可。
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【单选题】
Don’t worry too much, Jane. Your son ___ home already. Let’s go back and check it out.
A. returned
B. will return
C. has returned
D. may have returned
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I believe friendship is an essential element of making a healthy, ___ life.
A. flexible
B. rewarding
C. wealthy
D. inquisitive
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___ they have written about the behaviors of animals is hardly anything new.
A. That
B. This
C. What
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No other drugs are as good as this one; it must have been based on a(n) ___ formula (配方).
A. enormous
B. stimulating
C. unique
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Mothers tend to be too ___ toward their children. They should let them see more of the worl D.
A. hopeful
B. protective
C. modest
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The investigation ___ evidence of a large-scale illegal trade in wild birds.
A. uncovered
B. outweighed
C. overwhelmed
D. evolved
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Poor Laura! I feel so sorry for her. When she fell, she hurt her arm and, ___, broke her glasses.
A. in advance
B. in addition
C. over time
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Showing some sense of humor can be a(n) ___ way to deal with some stressful situations.
A. genuine
B. available
C. effective
D. favorite
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It will be worth the efforts even if you fail; the rewards you ___ will be great.
A. reap
B. boast
C. assure
D. cultivate
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He suggested transporting the supplies by air. But it is absolutely ___, for it will cost too much.
A. unusual
B. uncertain
C. impractical
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The newspaper didn’t mention the ___ of the damage caused by the fire.
A. range
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Do you ___ her novels as serious literature or as mere entertainment?
A. classify
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He doesn’t ___ of buying a house this year because the bank has refused to lend him any money.
A. afford
B. make the most
C. run out
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If you don’t ___ cooking today, we can go out to eat at the new restaurant.
A. would like
B. go on with
C. feel like
D. figure out、
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Bullying (恃强欺弱) can ___ a climate of fear and anxiety in school, and prevent students from focusing on their schoolwork.
A. keep back
B. give rise to
C. feel like
D. make use of
【单选题】
Science can now ___ many things which were thought to be mysterious by ancient people.
A. care for
B. lay out
C. account for
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The school has ___ many after-class activity groups for the pupils to make their spare time more colorful.
A. set up
B. set off
C. set out
D. set down
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When he was a small kid, he ___ from his peers because he could read fast and remember whatever he rea D.
A. showed off
B. worked out
C. stood out
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The fall in the number of deaths from heart disease is generally ___ improvements in diet.
A. put up with
B. attributed to
C. added to
D. replaced with
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We can be partners for now, but ultimately you have to ___ to develop a new software for our project.
A. keep up
B. fire off
C. make sense
D. take the lead
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Emotional Intelligence (情商) could be of practical use in many ___ such as how companies decide which job applicant to hire, how parents should raise their children, how schools should teach the students, and so on.
A. aspects
B. disciplines
C. structures
D. opportunities
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The teacher should praise students for their correct answers and also suggest ___ possibilities.
A. unlimited
B. unique
C. alternative
D. essential
【单选题】
In some classrooms, desks are arranged in a U-shape, so the teacher can ___ easily with the students.
A. interrupt
B. interact
C. interpret
D. interview
【单选题】
Computer technology ___ individuals to educate themselves and adapt to a constantly changing job market.
A. lets
B. makes
C. enables
D. provides
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Our hope for an enjoyable dinner was instantly ___ when the waiter dropped a salad plate on my hea D.
A. spoiled
B. restricted
C. exploded
D. vanished
【单选题】
___ the world has ever seen has occurred in the information and communications technologies.
A. Great a change
B. The great change
C. A greatest change
D. The greatest change
【单选题】
___ so many people around, it wasn’t convenient to have a long talk with him.
A. As
B. When
C. With
D. Since
【单选题】
Alice used to be terribly shy, but working abroad for a year has completely ___ her.
A. solved
B. transformed
C. characterized
D. regulated
【单选题】
Chinese Mandarin (普通话) is ___ for foreigners to learn because the changes in the tone will totally change the meaning of words.
A. difficult
B. accessible
C. competitive
D. easy
【单选题】
Take action on those things that will have the biggest ___ impact on your life with the least amount of effort.
A. portable
B. positive
C. sophisticated
D. moderate
【单选题】
The adoption of this measure will greatly reduce the ___ of greenhouse gas emissions (排放物), which may help slow global warming.
A. loan
B. decline
C. release
D. response
【单选题】
I think I have a healthy lifestyle. I eat a lot of fruit and vegetables, and I’m a ___ drinker.
A. moderate
B. heavy
C. gradual
D. delicate
【单选题】
In a way the human race needs to improve its mental and physical qualities if it is to deal with the more and more ___ world and meet new challenges.
A. typical
B. complex
C. rational
D. orderly
【单选题】
If a person simply does not care about this activity, it’s ___ impossible to get him to participate.
A. barely
B. seldom
C. hardly
D. practically
【单选题】
Sometimes, even when the mind ___ functioning, the body keeps on working normally.
A. ceases
B. arouses
C. regulates
D. specializes
【单选题】
Jeffery expressed his ___ about the health and fitness of his co-workers, but they said they didn’t want to “waste time” on an exercise bike or jogging.
A. agony
B. concern
C. addiction
D. feedback
【单选题】
Such chemicals are indeed negatively ___ those humans to whom they are expose D.
A. risking
B. detecting
C. impacting
D. overwhelming
【单选题】
We regret for selling you the faulty product, and our company has agreed to ___ you by $500.
A. match
B. reverse
C. reward
D. compensate
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This lecture taught me how to manage my time better to include my online studies in my busy ___.
A. schedule
B. outline
C. structure
D. responsibility
【单选题】
Generally speaking, an Irish person will not accept an offer straight away; he will ___ once or twice first before accepting it.
A. receive
B. decline
C. summarize
D. polish
