某煤矿井田面积约30km2,含煤地层全区可采和局部可采煤层共6层,但硫分大于3%的煤

题型:问答题

问题:


某煤矿井田面积约30km2,含煤地层全区可采和局部可采煤层共6层,但硫分大于3%的煤炭资源暂不开采。该煤矿设计可采量为7500万t,设计开采煤层总厚度为4.3 m,平均采深50~700m。该煤矿开采原煤属于低变质无烟煤,煤中有害元素砷含量较低。原煤经洗选后主要产品为电煤,该矿井瓦斯平均涌出量30m3/min,属于高瓦斯矿井,设有地面固定式瓦斯抽放站,矿井投产初期,瓦斯作工业场地锅炉和生活燃料,后期用于发电。该项目配套建设同等规模的选煤车间和1000m铁路专用线。矿井服务年限60年。配套建设生产和生活污水处理站。矿井建设总投资6亿元,其中环保投资3000万元。该煤矿位于云贵高原,沟谷纵横,地形复杂多样。评价范围内井泉较多,其中一部分为饮用水源功能的井泉。该地区气候温暖潮湿,年平均风速为1.5 m/s。井田范围内无风景名胜区和自然保护区。
根据以上内容,回答以下问题。

如何对地表水进行环境影响评价

考点:环境影响评价工程师环境影响评价案例分析环境影响评价案例分析
题型:问答题

下列关于植物生长素作用及其应用的叙述,错误的是[ ]

A.成熟细胞比幼嫩细胞对生长素更为敏感

B.顶端优势能够说明生长素作用的两重性

C.适宜茎生长的一定浓度的生长素往往抑制根的生长

D.可利用生长素类似物防止落花落果

题型:问答题

良性前列腺增生发生于前列腺的哪一个带

A.前纤维肌区

B.移行带

C.中央带

D.外周带

E.射精管

题型:问答题

大豆油不宜存是指过氧化值大于8mmol/kg,小于或等于12mmol/kg;()(KOH),mg/g,小于或等于4(KOH),mg/g。

A、过氧化氢

B、氧化氢

C、酸度

D、酸值

题型:问答题

正盐A能发生下图所示的反应,图中①~⑧分别代表有关反应中的一种物质(某些物质已略去),其中①、②、④、⑤为无色气体.

请完成下列各题:

(1)写出化学式A______⑥______⑦______.

(2)写出下列反应方程式:⑧+⑦→②+③+⑥:______

①+④→⑤:______.

(3)⑧→⑤的离子方程式为:______.

题型:问答题

Most people would be (1) by the high quality of medicine (2) to most Americans. There is a lot of specialization, a great deal of (3) to the individual, a (4) amount of advanced technical equipment, and (5) effort not to make mistakes because of the financial risk which doctors and hospitals must (6) in the courts if they (7) things badly.

But the Americans are in a mess. The problem is the way in (8) health care is organized and (9) . (10) to pubic belief it is not just a free competition system. The private system has been joined a large public system, because private care was simply not (11) the less fortunate and the elderly.

But even with this huge public part of the system, (12) this year will eat up 84.5 billion dollars—more than 10 percent of the U. S. Budget—large number of Americans are left (13) . These include about half the 11 million unemployed and those who fail to meet the strict limits (14) income fixed by a government trying to make savings where it can.

The basic problem, however, is that there is no central control (15) the health system. There is no (16) to what doctors and hospitals charge for their services, other than what the public is able to pay. The number of doctors has shot up and prices have climbed. When faced with toothache, a sick child, or a heart attack, all the unfortunate persons concerned can do is (17) up. Two thirds of the population (18) covered by medical insurance. Doctors charge as much as they want (19) that the insurance company will pay the bill.

The rising cost of medicine in the U. S. A. is among the most worrying problems facing the country. In 1981 the country’s health bill climbed 15.9 percent--about twice as fast as prices (20) general.

11()

A. looking for

B. looking into

C. looking after

D. looking over

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