膨胀空气进入上塔量,氮气纯度会()。A.上升 B.下降 C.不变

题型:单项选择题

问题:

膨胀空气进入上塔量,氮气纯度会()。

A.上升

B.下降

C.不变

考点:制氧工考试制氧中级工制氧中级工题库
题型:单项选择题

高低压脱丙烷塔系统开车前应具备的条件有()。

A.干燥气密合格

B.丙烯机运行正常

C.高低压脱丙烷系统的冷户已备用

D.加氢反应器运行正常

题型:单项选择题

甲型溶血性链球菌可引起

A.败血症

B.菌血症

C.毒血症

D.脓毒血症

E.内毒素血症

题型:单项选择题

行车指挥自动化时(ATC系统)列车运行调整的方法是().

A.自动列车运行调整和人工列车运行调整

B.只能进行人工列车运行调整

C.列车跳站停车可自动进行,不需人工干预。

D.列车运行图早晚点时间在一定范围内的图定列车不能自动进行调整,需人工干预

题型:单项选择题

假定英语课上老师要求同桌之间交换修改作文,请你修改一下你同桌写的作文。文中共有10处语言错

误,每句中最多有两处。错误涉及一个单词的增加、删除或修改。增加:在缺词处加一个漏字符号(^),并在其下面写出该加的词。删除:把多余的词用斜线(\)划掉。修改:在错的词下划一横线,

并在该词下面写出修改后的词。注意:1. 每处错误及其修改均仅限一词。2. 只允许修改10处,多者

(从第11处起)不计分。

    One evening there had a big dance at the hotel in our town. One of the guest at the dance was a man of

about forty who thought he was very handsome that every girl who saw him would fall in love with him. In

the beginning of one of the dances, he saw a pretty young woman standing besides an older lady at the edge

of the dance-floor. He went up to the girl and asked her to dance. She had seen him to dance before, so she

knew he was good dancer, and she too liked dancing,so she received. After dancing the man asked her, "Do

you tell your mother everything which you do?" She answered sweetly, "She does not mind what I do it. But

my husband always wants to know." 

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题型:单项选择题

变压器导杆式电容型套管,套管复装时应检查密封面,()。

A.应平整

B.无划痕

C.无漆膜

D.无锈蚀

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