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【单选题】In the United States, the need to protect plant and animal species has become a highly controversial and sharply political issue since the passage of the Enered Species Act in 1973．The act, design...
A.
Because people can't agree as to what species to protect.
B.
Because it is difficult to find an effective way to protect such species.
C.
Because it affects the interests of certain groups of people.
D.
Because it is a major problem involving a series of legal procedures.
【单选题】破坏臭氧层的主要污染源是（）
A.
工厂、家庭用炉灶燃烧矿物燃料
B.
有色金属冶炼工业排放的废气
C.
汽车尾气
D.
工业生产及家庭广泛使用电冰箱和空调释放的氯氟烃化合物
【单选题】Passage One At the Kyoto conference on global warming in December 1997, it became abundantly clear how complex it has become to work out international agreements relating to the en...
A.
it is always difficult to work out international agreements to cut down emissions harmful to the ozone layer
B.
it is no longer easy to reach international agreements relating to the environment
C.
the world has recently become aware of the threat of global warming
D.
the problem of global warming has largely been solved
【单选题】In the United States, the need to protect plant and animal species has become a highly controversial and sharply political issue since the passage of the Enered Species Act in 1973. The act, desig...
A.
to describe the difficulties in solving humanity's current problems
B.
to present the different views on humanity's current problems
C.
to yze the contradiction between countries in dealing with humanity's current problems
D.
to point out that humanity's current problems can only be solved through the cooperation of nations
相关题目：
【单选题】R22属于（ ）类氟利昂
A.
混合制冷剂
B.
CFC
C.
HCFC
D.
HFC
【单选题】臭氧层的作用是（）。
A.
用于人类呼吸
B.
阻挡紫外线对人类的侵害
C.
吸收有害气体
D.
维持生态平衡
【单选题】列与保护臭氧层有关的是（）。
A.
蒙特利尔议定书
B.
巴塞尔公约
C.
保护臭氧层维也纳公约
D.
关贸总协定
【单选题】氟利昂制冷装置做气赛试验时可向系统内先充人0.07~0.10MPa氟利昂，目的是（）。
A.
除水
B.
初步试漏
C.
便于用皂液查漏
D.
便于检漏灯查漏
【多选题】臭氧层的作用
A.
保护作用
B.
加热作用
C.
温室气体的作用
D.
电离层的作用
E.
垂直对流作用
【判断题】氟利昂CF3CL的代号是R13（ ）
A.
正确
B.
错误
【单选题】In the United States, the need to protect plant and animal species has become a highly controversial and sharply political issue since the passage of the Enered Species Act in 1973．The act, design...
A.
Because people can't agree as to what species to protect.
B.
Because it is difficult to find an effective way to protect such species.
C.
Because it affects the interests of certain groups of people.
D.
Because it is a major problem involving a series of legal procedures.
【单选题】因氟利昂会______，故含氟冰箱被淘汰。
A.
伤害人的神经系统
B.
耗能
C.
破坏臭氧层
D.
引起呼吸系统疾病
【单选题】常用的制冷剂氟利昂12，在1个大气压下，其沸点为（）。
A.
-29.8
B.
-20
C.
-10
D.
-5
【单选题】臭氧层：气候变暖
A.
偷猎：物种灭绝
B.
森林：水土流失
C.
干旱：土地沙化
D.
酸雨：水源污染
【单选题】破坏臭氧层的主要污染源是（）
A.
工厂、家庭用炉灶燃烧矿物燃料
B.
有色金属冶炼工业排放的废气
C.
汽车尾气
D.
工业生产及家庭广泛使用电冰箱和空调释放的氯氟烃化合物
【单选题】破坏臭氧层的物质主要是（ ）｡
A.
氟利昂
B.
二氧化碳
C.
酸雨
D.
紫外线
【单选题】Passage One At the Kyoto conference on global warming in December 1997, it became abundantly clear how complex it has become to work out international agreements relating to the en...
A.
it is always difficult to work out international agreements to cut down emissions harmful to the ozone layer
B.
it is no longer easy to reach international agreements relating to the environment
C.
the world has recently become aware of the threat of global warming
D.
the problem of global warming has largely been solved
【判断题】符号R22代表的制冷剂是氟利昂22
A.
正确
B.
错误
【单选题】国际保护臭氧层日是( )。
A.
42526
B.
42482
C.
42629
D.
42689
【单选题】“国际保护臭氧层日”是()。
A.
6月5日
B.
4月22日
C.
43359
D.
11月15日
【单选题】氟利昂制冷剂 R12的危害是
A.
有辐射
B.
有毒性
C.
破坏大气臭氧层
D.
破坏自然生态
【单选题】In the United States, the need to protect plant and animal species has become a highly controversial and sharply political issue since the passage of the Enered Species Act in 1973. The act, desig...
A.
to describe the difficulties in solving humanity's current problems
B.
to present the different views on humanity's current problems
C.
to yze the contradiction between countries in dealing with humanity's current problems
D.
to point out that humanity's current problems can only be solved through the cooperation of nations