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【单选题】
特种设备中，眼里管道是指公称直径>25mm并利用一定的压力输送气体或者液体的管道。下列介质中，必须应用压力管道输送的是( )。A.
最高工作温度高于标准沸点<0.1MPa(表压)的气体< /div>
B.
有腐蚀性、最高工作温度低于标准沸点的液化气体
C.
最高工作温度低于标准沸点的液体
D.
有腐蚀性、最高工作温度高于或者等于标准沸点的液体
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皮皮学刷刷变学霸
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【简答题】病毒是严格的 __,它只能在__ __内繁殖,其繁殖过程可分为__ _、___ __、_ ___、______和_____五个阶段。
【单选题】听力原文： It was not until one hundred and fifty years ago that scientists learned about the existence of dinosaurs. Thanks to an English doctor and his wife, the door was opened to this zoological study....
A.
Beasts.
B.
Herbivorous.
C.
Carnivorous.
D.
Dinosaurs.
【简答题】Although man has known asbestos （石棉） for many hundreds of years, it was not until 160 years ago that it was mined for the first time on the North American continent. H.W.Johns, owner of a New York Cit...
【简答题】It was Monday. Mrs. Smith’s dog was hungry，but there was not any meat in the house. Thinking that there was no 46 way, Mrs. Smith took a piece of paper, and wrote the following words 47 it:“Give my do...
【单选题】Bach died in 1750,but it was not until the early 19th century his musical gift was fully recognized.
A.
while
B.
though
C.
that
D.
after
【单选题】It was not until the 4th century ( ) the church in Rome began to celebrate Christmas.
A.
that
B.
when
C.
as
D.
unless
【单选题】理想与空想的区别在于( )。
A.
想是人们的主观意志和想当然
B.
会实践是科学知识产生的源泉
C.
理想变为现实，要靠实实在在的实践
D.
了坚定的信念，理想就会自动变为现实
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