当热流的热负荷较大,热流体入口温度较高而要求冷后的出口温度较低时,空冷器可选用()的

题型:单项选择题

问题:

当热流的热负荷较大,热流体入口温度较高而要求冷后的出口温度较低时,空冷器可选用()的布置方法。

A.先空冷再水冷

B.先水冷再空冷

C.两台空冷并联

D.两台空冷串联

考点:催化裂化装置操作工催化裂化装置操作工高级技师催化裂化装置操作工高级技师题库
题型:单项选择题

Tibet is among the most popular places for Chinese tourists. The number of travelers to Tibet has grown by 10% every year for a few years. Since July 1,2006, when the first train ran 1956 kilometers from Xining to Lhasa, more and more people have been going to Tibet.

The train stops at several famous places along the way, such as Qinghai Lake, Kunlun Mountain, and the Potala Palace. Passengers can also enjoy many activities during the journey, like Tibetan dancing and Karaoke.

On the train, passengers can have tea, eggs and noodles for breakfast, and fried chicken and green vegetables for lunch and dinner. Unlike most Chinese trains which have open – hole toilets, this one has special toilets which can collect the waste. There is also a special rubbish system (系统) in the train that keeps the environment clean. All the windows on the train can protect people from the bright sunlight. TV and electrical sockets (插座) for computers and mobile phones can be found on the train.

Because there isn’t much oxygen there, trains will have oxygen masks (氧气罩) for those who need them. It makes passengers feel more comfortable when they have enough oxygen on the famous “roof of the world”. There are also doctors on the train to make sure that all of the travelers are safe.

小题1:Which of the following is NOT among the places of interest?

A.Qinghai Lake

B.Karaoke.

C.Kunlun Mountain.

D.The Potala Palace.小题2:The train is unlike most Chinese trains except its            .

A.windows

B.toilets

C.sockets

D.rubbish小题3:The underlined word “them” in the last paragraph refers to          .

A.oxygen masks

B.doctors

C.oxygen

D.passengers小题4:We can learn from the passage that         .

A.flying to Tibet is impossible

B.train to Lhasa is too clean to take

C.train trip to Tibet is popular with travelers

D.taking train to Lhasa causes a lot of trouble小题5:What’s the best title of the passage?

A.Tibet – Roof of the World

B.Magic Train to Magic Tibet

C.Beautiful Views in Tibet

D.A Comfortable Trip to Tibet

题型:单项选择题

2011年3月5日的十一届全国人大四次会议上,温 * * * * 在作政府工作报告中就有关改善民生问题部分提到,2010年度“中央财政安排社会保障和就业支出9 081亿元,增长19.4%”。这说明[ ]

A、财政在资源配置中起基础性作用

B、财政是促进社会公平、改善人民生活的物质保障

C、财政具有促进资源合理配置的作用

D、财政具有促进国民经济平稳运行的作用

题型:单项选择题

燃烧是物质与氧气剧烈()生成相应的氧化物,同时放出光和热的一种现象。

A、化合

B、熔解

C、熔合

D、分离

题型:单项选择题

转炉炼钢碳氧反应主要发生在冶炼()期。

A.前 

B.中 

C.后 

D.前中

题型:单项选择题

到达营业站的整车货物的卸车应统计卸车数。

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