【单选题】
经氢气干燥装置后,氢气露点温度小于___ 才为合格。
A. -20℃;
B. -30℃;
C. -40℃;
D. -50℃。
查看试卷,进入试卷练习
微信扫一扫,开始刷题

答案
D
解析
暂无解析
相关试题
【单选题】
氢罐安全阀起座和回座压力的整定值均以___的规定为准。
A. 《 压力容器安全监察规程》 ;
B. 《 电力工业技术管理法规》;
C. 《 电力生产事故调查规程》 ;
D. 《 发电厂安全工作规程》。
【单选题】
检修后的制氢设备在启动投运前,应用氮气吹洗整个系统,从氢气取样门进行气体含氧量分析,直到含氧量小于___为止。
A. 0.5%;
B. 1.5%;
C. 2.0%;
D. 4.0%。
【单选题】
氢气在发电机内湿度往往会增大,其水分的主要来源是___。
A. 氢气中原有的水分;
B. 发电机轴承密封系统透平油中的水分渗入;
C. 发电机内冷器泄漏;
D. 发电机内冷水的漏入。
【单选题】
《火力发电机组和蒸汽动力设备水汽质量标准》GB/T 12145-2008规定,除盐水箱进口电导率小于或等于___μS/cm(25℃)。
A. 20;
B. 2~5;
C. 0.20;
D. 0.50。
推荐试题
【单选题】
我们的干部要上进,我们的党要上进,我们的国家要上进,我们的民族要上进,就必须大兴___之风,坚持学习、学习、再学习,坚持实践、实践、再实践。
A. 调查研究
B. 学习
C. 实事求是
D. 解放思想
【单选题】
The shy girl felt _________ and uncomfortable when she could not answer her teacher’s questions.
A. amazed
B. awkward
C. curious
D. amused
【单选题】
This hotel _______ $ 60 for a single room with bath.
A. claims
B. demands
C. prices
D. charges
【单选题】
Frequently singleparent children ____________ some of the functions that the absent adult in the house would have served.
A. take off
B. take after
C. take in
D. take on
【单选题】
A peculiarly pointed chin is his most memorable facial __________.
A. mark
B. feature
C. trace
D. appearance
【单选题】
John Dewey believed that education should be a preparation for life, that a person learns by doing, and that teaching must ________ the curiosity and creativity of children.
A. seek
B. stimulate
C. shape
D. secure
【单选题】
Criticism and self-criticism is necessary _______ it helps us to find and correct our mistakes.
A. by that
B. at that
C. on that
D. in that
【单选题】
However, at times this balance in nature is ________, resulting in a number of possibly unforeseen effects.
A. troubled
B. disturbed
C. confused
D. puzzled
【单选题】
The patient’s health failed to such an
extent that he was put into _____ care.
A. tense
B. rigid
C. intensive
D. tight
【单选题】
Does everyone on earth have an equal right _________ an equal share of its resources?
A. by
B. at
C. to
D. over
【单选题】
In 1914, an apparently insignificant event in a remote part of Eastern Europe __________ Europe into a great war.
A. inserted
B. imposed
C. pitched
D. plunged
【单选题】
We had to ___________ a lot of noise when the children were at home.
A. go in for
B. hold on to
C. put up with
D. keep pace with
【单选题】
A person's calorie requirements vary ______ his life.___
A. across
B. throughout
C. over
D. within
【单选题】
Generous public funding of basic science would ________considerable benefits for the country's health, wealth and security.___
A. lead to
B. result from
C. lie in
D. settle down
【单选题】
In a time of social reform, people's state of mind tends to keep ___________ with the rapid changes of society___
A. step
B. progress
C. pace
D. touch
【单选题】
The speech which he made __________ the project has bothered me greatly.___
A. regarded
B. concerned
C. regarding
D. concerning
【单选题】
Harry was _______ by a bee when he was collecting the honey.___
A. stung
B. stuck
C. bitten
D. scratched
【单选题】
The thief tried to open the locked door but _________.___
A. in no way
B. in vain
C. without effect
D. at a loss
【单选题】
Remember that customers don't ________ about prices in that city.___
A. debate
B. consult
C. dispute
D. bargain
【单选题】
I hope that you'll be more careful in typing the letter. Don't _________ anything.___
A. lack
B. withdraw
C. omit
D. leak
【单选题】
The tomato juice left brown __________ on the front of my jacket.___
A. spot
B. point
C. track
D. trace
【单选题】
The committee is totally opposed ________ any changes being made in the plans.___
A. of
B. on
C. to
D. against
【单选题】
I'm very sorry to have _______ you with so many questions on such an occasion.___
A. interfered
B. offended
C. impressed
D. bothered
【单选题】
The price of beer _______ from 50 cents to $4 per liter during the summer season.___
A. altered
B. ranged
C. separated
D. differed
【单选题】
Their son doesn't know what to ________ at the university; he can't make up his mind about his future.___
A. take in
B. take up
C. take over
D. take after
【单选题】
Although they plant trees in this area every year, the tops of some hills are still _________.___
A. blank
B. hollow
C. vacant
D. bare
【单选题】
Being a pop star can be quite a hard life, with a lot of traveling ________ heavy schedules.
A. with regard to
B. as to
C. in relation to
D. owing to
【单选题】
Tony is very disappointed _______ the results of the exam.
A. with
B. for
C. toward
D. on
【单选题】
William Penn, the founder of Pennsylvania, _________ defended the right of every citizen to freedom of choice in religion.
A. peculiarly
B. indifferently
C. vigorously
D. inevitably
【单选题】
When people become unemployed, it is _______ which is often worse than lack of wages.___
A. laziness
B. poverty
C. idleness
D. inability
【单选题】
In previous times, then fresh meat was in short __________, pigeons were kept by many households as a source of food.
A. store
B. provision
C. reserve
D. supply
【单选题】
Those gifts of rare books that were given to us were deeply _________.___
A. appreciated
B. approved
C. appealed
D. applied
【单选题】
It is our ___________ policy that we will achieve unity through peaceful means.___
A. consistent
B. continuous
C. considerate
D. continual
【单选题】
He is __________ about his chances of winning a gold medal in the Olympics next year.___
A. optimistic
B. optional
C. outstanding
D. obvious
【单选题】
The director was critical _______________ the way we were doing the work.___
A. at
B. in
C. of
D. with