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问题 单项选择题

以下关于大气环境防护距离的计算，错误的是( )。

A．当无组织源排放多种污染物时，应分别计算，并按计算结果的最大值确定其大气环境防护距离

B．采用大气环境防护距离模式计算出的距离是以污染源边界为起点的控制距离

C．对于属于同一生产单元(生产区、车间或工段)的无组织排放源，应合并作为单一面源计算并确定其大气环境防护距离

D．有场界排放浓度标准的，大气环境影响预测结果应首先满足场界排放标准

答案

参考答案：B

单项选择题

根据普劳克斯的观点，生长极是否存在决定于( )。

A．有无依托城镇
B．有无主导企业
C．有无发动型工业
D．有无专业化部门
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单项选择题

Attempts to understand the relationship between social behavior and health have their origin in history. Dubos (1969) suggested that primitive humans were closer to the animals (1) they, too, relied’upon their instincts to stay healthy. Yet some primitive humans (2) a cause and effect relationship between doing certain things and alleviating (3) of a disease or (4) the condition of a wound. (5) there was so much that primitive humans did not (6) the functioning of the body, magic became an integral component ofthe beliefs about the causes and cures of heath (7) Therefore it is not (8) that early humans thought that illness was caused (9) evil spirit. Primitive medicines made from vegetables or animals were invariably used in combination with some form of ritual to (10) harmful spirit from a diseased body.

One of the. earliest (11) in the Western world to formulate principles of health care based upon rational thought and (12) of supernatural phenomena is found in the work of the Greek physician Hippocrates. The writing (13) to him has provided a number of principles underiying modern medical practice. One of his most famous (14) , the Hippocratic Oath, is the foundation of contemporary medical ethics.

Hippocrates also argued that medical knowledge should be derived from a (15) of the natural science and the logic of cause and effect relationships. In this (16) thesis, On Air, Water, and Places, Hippocrates pointed out that human well-being is (17) by the totality of environmental (18) : living habits or lifestyle, climate, geography of the land, and the quality of air, and food. (19) enough, concerns about our health and the quality of air, water, and places are (20) very much written in twentieth century.

16（）

A.durable

B.classic

C.thorough

D.immediate
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