【判断题】
气瓶运输(含装卸)时,严禁烟火,运输可燃气体气瓶时,运输工具上应备有灭火器材。
查看试卷,进入试卷练习
微信扫一扫,开始刷题
相关试题
【判断题】
等离子弧能量集中、温度高,可得到充分熔透、反面成形均匀的焊缝。
【判断题】
123电渣焊是一种大厚度工件的高效焊接法。
【判断题】
泡沫灭火剂指能够与水混溶,并可通过机械或化学反应产生灭火泡沫的灭火剂。
【判断题】
采用心脏复苏法抢救5分钟后,触电人员仍未恢复心跳和呼 吸,即可停止抢救。
【判断题】
堆焊内孔壁时,往内孔填砂进行堆焊可提高生产效率。
【判断题】
水下焊接与热切割时,焊接电源必须用直流电,禁用交流电。
【判断题】
熔化焊设备的漏电保护器,应每月检查一次,即操作漏电保护器按钮,检查其是否能正常断开电源。
【判断题】
采用压缩空气的吸压式焊剂回收输送器不可以安装在小车上使用。
【判断题】
氧-乙炔焰的堆焊工艺与气焊工艺截然不用。
【判断题】
氧熔剂切割气主要用于切割不锈钢铸件和铸铁件的浇冒口。
【判断题】
134可以从气瓶压力表压力值的大小换算出液态二氧化碳的贮量。
【判断题】
生产安全事故是指在生产过程中造成人员伤亡、伤害、职业病、财产损失或其他损失的意外事件。
【判断题】
可燃性物质发生着火的最低温度,称为着火点或燃点。
【判断题】
钎焊作业安全生产是为了使钎焊作业生产过程在符合物质条件和工作秩序下进行,防止发生人身伤亡和财产损失等生产事故,消除或控制危险、有害因素,保障人身安全与健康、设备和设施免受损坏、环境免遭破坏的总称。
【判断题】
在推拉电源闸刀开关时,必须戴绝缘手套,同时头部需偏斜。
【判断题】
《安全生产法》的核心内容不包括五方运行机制。
【判断题】
在锅炉等容器或狭小的舱间进行焊割时,应向容器或舱间送风和排气,加强通风。通风时为了提高效果,最好使用氧气。
【判断题】
在三相三线制的供电系统中,焊机外壳必须设置保护性接零装置。
【判断题】
发现有人缺氧室息,应迅速将其抬到安全、通风良好的地点抢救。
【判断题】
在使用割炬时,发生回火应立即关闭氧气阀和乙炔阀,然后关闭预热氧阀。
【判断题】
焊补燃料容器时,操作者应坐在容器上焊接
【判断题】
气焊切割用的工业氧气,其危险性随着氧气压力的增高而增大。
【判断题】
两焊件端面之间留有间隙的作用是为了保证焊透。
【判断题】
直接电击是指人体触及正常工作的带电体,间接电击是指人体触及意外带电体。
【判断题】
作业场所附近有与明火相抵触的工种,只要小心些,可以焊割。
【判断题】
水下焊接与切割,它与在大气中焊接与切割相比危险性较小。
【判断题】
当压力为147kPa表压而温度超过580℃时,乙炔就产生爆炸分解。
【判断题】
以气体为置换介质时,其用量为被置换容积的3倍以上。
【判断题】
除了性质较稳定的金、铂、钛、银、钼、钉、铭、锹、依以外,其他金属都能被硝酸溶解。
【判断题】
熔化焊机中不与地相连接的电气回路,在试验时对个别元件,由于特性限制,允许从电路中拆除或短接。
【判断题】
焊接时电弧的可见光亮度比肉眼正常承受的光度大1000倍。
【判断题】
自动焊和手工焊主要用于大型机械设备制造,其设备多安装 在厂房里,作业场所比较固定。
【判断题】
气瓶储存时,空瓶与实瓶两者应分开放置,并有明显标志。
推荐试题
【单选题】
______ the War of Independence, the United States was an English colony.
A.
B. efore B. At
C. In
D. Between
【单选题】
A police officer claimed he had attempted to ____ paying his fare.
A. avoid
B. reject
C. refuse
D. neglect
【单选题】
While I was in the university, I learned taking photos, ______ is very useful now for me.
A. it
B. which
C. that
D. what
【单选题】
He is not seriously ill, but only a ____ headache.
A. obvious
B. delicate
C. slight
D. temporary
【单选题】
On average, a successful lawyer has to talk to several ____ a day.
A. customers
B. supporters
C. guests
D. clients
【单选题】
What is the train ____ to Birmingham?
A. fee
B. tip
C. fare
D. cost
【单选题】
You shouldn't ______ your time like that, Bob, and was cold yesterdak tonight.
A. cut
B. do
C. kill
D. kick
【单选题】
Both the kids and their parents ____ English, I think. I know it from their accent.
A. is
B. been
C. are
D. was
【单选题】
You had better ___ a doctor as soon as possible.
A. seeing
B. saw
C. see
D. seen
【单选题】
He opened the letter and it contained ___.
A. an important information
B. some important informations
C. many important information
D. some important information
【单选题】
He has been writing for 3 years, but being a writer is not his ___.
A. chance
B. choice
C. change
D. character
【单选题】
They have never heard any ___.
A. a customer complaint
B. the customer's complaints
C. customer's complaint
D. the customers' complaints
【单选题】
He is not a child ___.
A. no more
B. no longer
C. any much
D. any more
【单选题】
The retired man is used to ___ his two dogs early in the morning.
A. exercise
B. exercising
C. exercised
D. exercises
【单选题】
It was not ___ midnight that they discovered the children were not in their bedroom.
A. before
B. at
C. after
D. until
【单选题】
Young ___ he is, he knows how to get along with others.
A. like
B. as
C. although
D. however
【单选题】
Could you show me where the___ shoes are?
A. Women
B. womens
C. woman
D. women's
【单选题】
He succeeded ___ out a lot of things entirely new in the world.
A. in working
B. to work
C. working
D. at working
【单选题】
It took me a long time to ___ the disappointment of failing the exam.
A. get over
B. get up
C. get into
D. get down
【单选题】
She ___ 100 pages of the book today.
A. has already read
B. already reads
C. already read
D. was already read
【单选题】
He has been ___ for nearly three weeks after the death of his dear pet.
A. sad
B. satisfied
C. evil
D. joyful
【单选题】
One cannot learn a foreign language well ___he studies hard.
A. unless
B. if
C. as
D. when
【单选题】
A large number of people___ present at the meeting, which was out of our expectation.
A. was
B. were
C. have
D. has
【单选题】
When the girls saw the funny man, they couldn't ___ laughing.
A. keep from
B. keep on
C. keep away
D. keep at
【单选题】
We are glad that we finally managed to get into contact ___ them.
A. at
B. on
C. from
D. with
【单选题】
This kind of plant___a lot of water at all times.
A. assumes
B. limits
C. produces
D. requires
【单选题】
Look! Here ___ the famous player.
A. comes
B. come
C. had come
D. coming
【单选题】
Uncle Sam sent him a___ bicycle as a birthday present.
A. red sports new
B. sports new red
C. new sports red
D. new red sports
【单选题】
I couldn't find my English-Chinese dictionary___.
A. anywhere
B. everywhere
C. nowhere
D. somewhere
【单选题】
The plane was about to___, and yet I left my ticket behind.
A. take off
B. take on
C. take up
D. take in
【单选题】
John succeeded ___ what he wanted.
A. to get
B. to getting
C. in getting
D. and getting
【单选题】
The accident was ___ to careless driving.
A. for
B. likely
C. due
D. because
【单选题】
With a good command of reading skills, most students can manage to read ___as they could the year before.
A. as twice fast
B. as fast as twice
C. as twice as fast
D. twice as fast
【单选题】
Some famous singers live on the ___from their record sales.
A. salary
B. price
C. bill
D. income
【单选题】
_____of them thinks that is a good idea.
A. Anyone
B. No one
C. None
D. Someone
【单选题】
Don't be too ___about things you're not supposed to know.
A. strange
B. amusing
C. curious
D. conscious
【单选题】
It was in 1969 ___the American astronauts succeeded in landing on the moon.
A. when
B. the moment
C. which
D. that
【单选题】
___people in the world are sending information by e-mail every day.
A. Several million
B. Many millions
C. Several millions
D. Many million
【单选题】
He___less time reading stories about film stars than before.
A. takes
B. spends
C. costs
D. pays
【单选题】
Selecting a mobile phone for personal use is no easy task because technology___so rapidly.
A. is changing
B. has been changed
C. will have changed
D. will change