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问题 名词解释

家畜环境与设施

答案

参考答案：是研究家畜养殖的健康和生产性能与环境之间的相互作用关系，并利用工程设施为家畜的养殖生产创造适宜的环境条件，达到高产、优质、高效、安全、持续生产的目的。

填空题

Today I’d like to talk about how to become a (1) . Usually you have to start at the beginning. That is, you have to begin (2) of some sort on a local newspaper, a (3) , maybe on a small magazine -- work (4) . Now there aren’t that many organizations which have large numbers of foreign correspondents so you also have to (5) with that aim (6) . Another way of doing it is to work abroad, and work as (7) . That’s somebody who sells stories, and gets paid (8) , to newspapers and magazines and so on. And hoping to (9) that way, and eventually to be offered a (10) .
I don’t really know (11) are needed, but obviously a degree in modern languages or (12) would be very useful. But, a degree in itself probably wouldn’t (13) . It wouldn’t be enough to get you job. It wouldn’t (14) to make an editor decide to (15) . So it’s difficult to define the (16) . You’re going to need (17) and the ability to assimilate information (18) and then produce stories which (19) of the newspaper or radio or television station you (20) .
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单项选择题

使用CT增强扫描的主要目的是（）

A.可以减少扫描时毫安秒的用量

B.帮助确定病变的位置

C.提高病变组织的空间分辨率

D.增强物体的对比度和观察病变组织的血供

E.提高CT机的密度分辨率
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