首页
登录
职称英语
Pollution control is management of waste materials in order to minimize the
Pollution control is management of waste materials in order to minimize the
游客
2023-12-24
10
管理
问题
Pollution control is management of waste materials in order to minimize the effects of pollutants on people and the environment. The quality of human health and of the natural environment depends on adequate pollution control. In the United States much has been done to control the more noticeable pollutants since 1965: more subtle yet still hazardous pollutants, however, remain to be adequately controlled.
Four general approaches to pollution control are: the intermittent reduction of industrial activities during periods of high air-pollution conditions; wider dispersion of pollutants using such devices as taller smokestacks; reduction of pollutants in industrial emission; and change of an industrial process or activity in order to produce less pollution. Taller smokestacks may reduce the concentrations to which local people are exposed, but they are ineffective in reducing overall pollution.
Pollutants removed from waste flows to reduce emissions to air and water may be disposed of by burial or storage on land, practices that pose potential hazards. Recent legislation requiring extensive emissions reductions has resulted in large investments in pollution-treatment technologies.
The fourth approach — changing a manufacturing process or activity in order to produce less pollution — may involve either the production of fewer residuals, by means of an improved process, or the separation and reuse of materials from the waste stream. This method of pollution control is the most effective and, as the costs of pollution control and waste disposal increase, is considered one of the most efficient.
Pollution-treatment systems have been effective in reducing the massive quantities of water and air pollutants that have clogged and choked urban areas. Although the improvements have been significant, recent pollution-control legislation aims to go further in order to control the less visible but often hazardous chemical and gaseous pollutants that still contaminate many waterways and urban atmospheres.
The costs of pollution control — resulting from capital, maintenance, and labor costs, as well as from the cost of additional residuals disposal — generally go up rapidly as a greater percentage of residuals is removed from the waste stream. Damage from pollution, on the other hand, goes down as a greater amount of contaminant is removed. Theoretically, the level of treatment should correspond to a point at which total costs of treatment and of damage to the environment are minimized or the benefits of further treatment are proportionally much smaller than the increased cost. In reality, costs or damages resulting from pollution can rarely be assessed in terms of dollars. [br] According to the passage, recent pollution-control legislation aims to______.
选项
A、control less visible as well as less hazardous chemical pollutants
B、increase the costs of pollution control and waste material disposal
C、have more strict control over less evident but often dangerous pollutants
D、eliminate all the hazardous chemical and gaseous pollutants
答案
C
解析
这是道细节题。解题句子是第五段的“recent pollution-control legislation aims to go further in order to control the less visible but often hazardous chemical and gaseous pollutants that still contaminate many waterways and urban atmospheres.”最近的污染控制立法旨在进一步控制非明显的危险化学物质和一些污染河流和城市环境的气体。故选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3300084.html
相关试题推荐
Sympathyoftenengenderslove,whichisusuallyunreliable.A、negatesB、controls
Wewantedtominimizecolorsandmaterials,reallykindofkeepingthingstranqu
Sympathyoftenengenderslove,whichisusuallyunreliable.A、negatesB、controls
Agoodhandatmanagementusuallyhassecond________toone’sbow,abestcardto
Inmanycountriestobaccoandmedicinearegovernment________.A、controlB、monop
ConstructionisexpandingalloverChina,nodoubtmanymaterialswillbeneeded
Dealingwithenvironmentalpollutionhasprovedtobeintractableformoreandm
Socialcontrolreferstosocialprocesses,plannedorunplanned,bywhichpe
Socialcontrolreferstosocialprocesses,plannedorunplanned,bywhichpe
Socialcontrolreferstosocialprocesses,plannedorunplanned,bywhichpe
随机试题
Wewantedtogetinvolvedwithsomethingwherewecouldworkdirectlywithc
食品卫生标准中表示严重危害人体健康的指标是A.食品中细菌总数 B.粮食中水分的
A.机体在运动时能摄取的最大氧量测定 B.无法完成极量运动的患者运动终点时的吸
( ),麦考利(Macaulay)为评估债券的平均还款期限,引入久期的概念。A
建设项目施工和地质勘察需要临时使用国有土地或者农民集体所有的土地的,由()以上
根据我国社会的实际情况,一般按照组织的(),将社会组织分为经济组织、政治组织、
A.临床常用的有效剂量 B.药物能引起的最大效应 C.引起50%最大效应的剂
下列关于资源税的说法,正确的是( )。A.开采原煤和进口原煤均缴纳资源税 B.
无机结合料对生石灰和消石灰的技术需求中共同的技术指标名称是( )。A.未消化残
下列哪种疾病与结肠癌关系最密切?( )A.回盲部结核 B.家族性结肠息肉病
最新回复
(
0
)