当污水处理装置出水超标时，不增加运行费用的调节方法是（） A._爱下问搜题

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问题多项选择题

当污水处理装置出水超标时，不增加运行费用的调节方法是（）

A.均匀水质水量

B.加大投药量

C.调节污泥性能

D.增加处理工艺

答案

参考答案：A, C

选择题

关于自然界的水循环，下列说法中正确的是（）

A．水蒸气在高空遇冷吸热液化成小水珠

B．冰山上的积雪只能先熔化，再蒸发成水蒸气升腾至空中

C．江湖河海中的水吸热蒸发成水蒸气升腾至空中

D．积雪放热熔化成水归入大海

填空题

Part 4

Questions 26-45

·Read the following passage and decide which answer bestfits each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.
The "standard of living" of any country means the (26) person’s share of the goods and services which the country produces. A country’s standard of living, therefore depends (27) and foremost on its capacity to produce wealth. "Wealth" in this (28) is not money, for we do not live on money (29) on things that money can buy: "goods" such as food and clothing, and "services" such as (30) and "entertainment".
A country’s capacity to produce wealth depends upon many factors, most of which have an effect (31) one another. Wealth depends (32) a great extent upon a country’s natural resources. Some regions of the world are well supplied with coal and minerals, and have a (33) soil and a favorable climate; other regions (34) none of them.
Next to natural resources (35) the ability to turn them to use. China is perhaps as well off as the USA in natural resources, but suffered for many years from (36) and external wars, and for this and other reasons was incapable (37) her resources. Sound and (38) political conditions, and freedom from foreign invasion, enable a country to develop its natural resources peacefully and steadily, and to produce more wealth than another country (39) well served by nature but less well ordered.
A country’s standard of living does not only depend upon the wealth that is produced and (40) within its own borders, but also upon what is indirectly produced through international trade. For example, Britain’s wealth in foodstuffs and other agricultural products would be much (41) if she had to depend only on those grown at home. Trade makes it possible for her surplus manufactured goods to be traded abroad for the agricultural products that would (42) be lacking. A country’s wealth is, therefore, much (43) by its manufacturing capacity, (44) that other countries can be found ready to (45) its manufactures.

A．way

B．feeling

C．sense

D．occasion