首页
登录
职称英语
Water is tasteless, odorless, and nearly colorless (it has a slight hint of
Water is tasteless, odorless, and nearly colorless (it has a slight hint of
游客
2024-06-09
22
管理
问题
Water is tasteless, odorless, and nearly colorless (it has a slight hint of blue). It is a【C1】______ that is essential to all known forms of life in its pure form. Water is【C2】______ on Earth. It exists in many places and forms. It appears mostly in the oceans and polar ice caps, but also【C3】______ clouds, rain water, rivers, freshwater aquifers, and sea ice. On the planet, water is【C4】______ moving through the cycle involving evaporation, precipitation, and runoff to the sea.
Water fit for human【C5】______ is called potable water. This natural resource is becoming【C6】______ in certain places as human population in those places increases, and its availability is a major social and economic【C7】______ .
Drinking water is water that is intended to be drunk by humans. Water of【C8】______ quality to serve as drinking water is called potable water whether it is used as such or not. Although most fresh water sources are drinkable【C9】______ humans, they can be a disease vector or cause long-term health problems if they do not【C10】______ certain water quality guidelines.
Most nations have water quality regulations for water sold as drinking water, although these are often not strictly【C11】______ outside of the developed world. Virtually all municipal water systems deliver a single quality of water, whether it is to be used for drinking, washing or landscape irrigation.
In the United States, public drinking water is【C12】______ by the Safe Drinking Water Act (SDWA). Among other【C13】______ , it protects the right of employees to report potential【C14】______ . Within 30 days of any retaliation, a whistleblower can file a complaint with the Occupational Safety and Health Administration (OSHA).
So far【C15】______ bacterial is concerned, the usual test is for a count of (more often than not harmless) bacteria, it【C16】______ that these serve as an indication of water pollution.
Water purification is the removal of contaminants from【C17】______ water to produce drinking water that is pure enough for humans. Many contaminants can be dangerous —but【C18】______ the quality standards, others are removed to improve the water’s smell,【C19】______ , and appearance.
It is not possible to tell whether water is safe to drink just by looking at it. Simple procedures such as boiling are not sufficient for treating water from an unknown source. Even natural spring water —【C20】______ safe for all practical purposes in the 1800’s —must now be tested before determining what kind of treatment is needed. [br] 【C8】
选项
A、sufficient
B、efficient
C、effective
D、sufficiency
答案
A
解析
A表示“充足的,充分的”;B表示“高效率的,利用率高的”,比如energy efficient“能源利用效率高的”;C表示“有效的”;D是A的名词形式,不适合这里的词性要求。
转载请注明原文地址:https://tihaiku.com/zcyy/3625995.html
相关试题推荐
AlthoughCoca-ColaCo:spentnearly$2billionlastyearadvertisingitsvar
NearlyeveryonehasrealizedthatMicrosoftbuyingHotmailhasillustratedthep
NearlyeveryonehasrealizedthatMicrosoftbuyingHotmailhasillustratedthep
NearlyeveryonehasrealizedthatMicrosoftbuyingHotmailhasillustratedthep
NearlyeveryonehasrealizedthatMicrosoftbuyingHotmailhasillustratedthep
NearlyeveryonehasrealizedthatMicrosoftbuyingHotmailhasillustratedthep
Howmanyofyoudrinkcola?Nearlyeverybody.Didyouknowthatcolastarted
Howmanyofyoudrinkcola?Nearlyeverybody.Didyouknowthatcolastarted
Howmanyofyoudrinkcola?Nearlyeverybody.Didyouknowthatcolastarted
Howmanyofyoudrinkcola?Nearlyeverybody.Didyouknowthatcolastarted
随机试题
DanielDefoedescribes______asatypicalEnglishMiddle-classmanoftheeightee
建筑内安全出口应分散布置,两个安全出口之间的距离不应小于()m。A.2
平行结转分步法下,只计算()。A.各步骤半成品的成本 B.本步骤发生的费用应
工程施工实施阶段监理进行开工条件控制的基本内容有()。A.签发单元工程开工
共用题干 TheySayIreland'stheBestIreland
板块型旅游目的地与点线型旅游目的地的划分依据是旅游目的地的()。A.旅游资
2012年单项选择:尽管工作压力大,事务繁忙,老师工作积极,用微笑面对每一个学
波长为λ的单色光垂直入射到一衍射光栅上,当光栅常数为(a+b)时,第一级衍射条纹
产后血虚,发热头痛,肌热面赤,烦渴欲饮,脉大而虚者,治宜选用( ) A.桂枝
5个月女婴,冬季出生,足月顺产,混合喂养,未加辅食,今晨突然面肌、眼角及口角抽动
最新回复
(
0
)