建立加经过热炉前燃料油循环前,除了燃料油压力外,其它联锁参数均正常,还应注意()。A

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问题:

建立加经过热炉前燃料油循环前,除了燃料油压力外,其它联锁参数均正常,还应注意()。

A.确认炉前所有雾化蒸汽阀门已经关闭

B.确认加热炉的所有燃料油油嘴已经安装完毕

C.所有燃料油炉前阀已经关闭

D.所有燃烧器已经全部烧气

考点:二甲苯装置操作工二甲苯装置操作工题库
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读图,回答1~3题

小题1:此图若为北半球7月等温线图,图中甲、乙、丙三处属于海洋的是

A甲、乙  B、甲、丙  C、乙、丙  D、甲

小题2:此图若为北半球7月等温线图,则气温数值:

A.d>b>c>a

B.c>d>a>b

C.c>a>d>b

D.d>b>c>a小题3:若此图为等高线,等值线的数值向北递减,则:

A.沿a、c线能发育河流

B.沿b、d线成为河流的分水岭

C.该区域的地势起伏不大

D.a、c两地的气温差与b、d两地的气温差接近

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一家珠宝店的珠宝被盗,经查可以肯定是甲、乙、丙、丁中的某一个人所为。审讯中,甲说:“我不是罪犯。”乙说:“丁是罪犯。”丙说:“乙是罪犯。”丁说:“我不是罪犯。”经调查证实四人中只有一个人说的是真话。 根据已知条件,下列哪个判断为真( )

A.甲说的是假话,因此,甲是罪犯

B.乙说的是真话,丁是罪犯

C.丙说的是真话,乙是罪犯

D.丁说的是假话,丁是罪犯

题型:单项选择题

以自然为宗

题型:单项选择题

In Japan’s capital city of Tokyo, earthquake danger limits(限制)the height of buildings. The city has spread out so far and the traffic has become so heavy that it is very difficult to go from one place to another. The price of the land, too, has skyrocketed. All these explains why a group of Japanese land developers came to the conclusion(结论)that there was nowhere to go but down. So far they have dug out space underground for fifteen shopping centres.

What are some of the advantages(优势)of shopping and eating underground? Clean air is one of them. The city of Tokyo has one of the most serious smog problems in the world. Another advantage is that you escape the ever-present threat(威胁)of traffic accidents on the city’s busy streets. Still another is the convenience(便利)of getting around: you are usually right next to, or even in, a subway station. And you can even spend the night underground if you like. The Kibosh station, for example, in downtown Tokyo, has a hotel with a bar, restaurant, and barbershop.

小题1:The reason why buildings can not be very high in Tokyo is ____.

A.that the information about high buildings is limited in Tokyo

B.that the workers haven’t mastered enough modern science and technology

C.the earthquake

D.the heavy traffic小题2:What’s the meaning of “skyrocket”? It means “____”.

A.go up sharply

B.be as high as that of a rocket

C.fall rapidly

D.be as low as that of a rocket小题3:So far how many shopping centers underground have there been?

A.15

B.50

C.More than 15

D.More than 50小题4:What are the advantages of shopping and eating underground

A.Less air pollution, the convenience of shopping.

B.Less air pollution, the convenience of shopping, and less traffic accidents.

C.Clean air and the convenience of getting around.

D.Clean air, less accidents’ threat, and the convenience of getting around.小题5:The passage mainly tells us______.

A.the capital of Japan

B.the land and its limits

C.the use of space underground in Tokyo

D.how to make full use of the land

题型:单项选择题

试述房水的产生及其循环。

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