下列分馏塔操作中,淹塔不会造成()。A.塔压迅速上升 B.侧线产品变重 C.侧线抽出

题型:单项选择题

问题:

下列分馏塔操作中,淹塔不会造成()。

A.塔压迅速上升

B.侧线产品变重

C.侧线抽出量大

D.侧线温度上升

考点:常减压装置考试高级常减压装置高级常减压装置题库
题型:单项选择题

阅读理解。

     Is your family interested in buying a dog? A dog can be a good friend to your family, but if you choose

the wrong kind of dog, it can cause you a lot of trouble.

     Family should sit down and discuss the problems before buying a dog. Even if the children in your family

are the ones who want the dog, the parent are the ones who are really responsible (有责任的) for seeing that

the animal is properly cared for. If you don't know much about dogs, it's a good idea to go to the library for

books about different kinds of dogs, as well as books about how to train a young dog. Dogs of different kinds

change in popularity as the years go by. One of the most popular dogs these days is the German shepherd (牧

羊犬). This is because it provides protection. The family should be warned that these dogs grow up to be very

big, and may be too powerful for children. If your house is not big, a toy dog may be a good choice (选择).

These dogs are very small and easy to train. They don't need to be walked daily.

1. According to the passage, who should take care of the dog?

A. Children.

B. Parents.

C. Family.

D. Friends.

2. The writer suggests one can get information about the different kinds of dogs ________.

A. by reading books about dogs

B. by buying a dog from a pet shop

C. by watching dogs in a zoo

D. by asking some friends

3. The toy dog is a good choice when ________.

A. you have small children

B. your living space is not large

C. you are afraid of large dogs

D. you live in the city

4. The passage is mainly about ________.

A. how to take care of dogs

B. different kinds of books about dogs

C. how to choose the right dogs for family pets

D. different kinds of dogs

题型:单项选择题

叠加原理中所说的电势不作用是指()。

A.电势与其内阻均短接

B.电势所在支路开路

C.电势短路,其内阻仍起作用

题型:单项选择题

胡先生,30岁,患支气管扩张已10余年。1周来因受凉咳嗽、咳痰加重,痰呈脓性,每日约500ml,体温37.8℃。

清除此病人痰液最有效的措施为

A.指导有效咳嗽

B.体位引流

C.湿化呼吸道

D.帮助翻身、拍背

E.鼻导管吸痰

题型:单项选择题

麦类作物从低海拔向高海拔引种生育期变(),稻类作物由高纬度向低纬度引种生育期变()。

题型:单项选择题

通过"对医学道德规范的意识"确定医学道德规范,这是()。

A.具体医学伦理难题

B.抽象医学道德评价

C.具体医学道德评价

D.抽象医学伦理难题

E.社会医学伦理问题

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