首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Many people who fly at least occasionally have come down with a cold or the flu shortly after disembarking. Is the air in airbor
Many people who fly at least occasionally have come down with a cold or the flu shortly after disembarking. Is the air in airbor
admin
2009-05-09
68
问题
Many people who fly at least occasionally have come down with a cold or the flu shortly after disembarking. Is the air in airborne commercial jets【21】______? The Association of Flight Attendants (AFA), 【22】______which 42, 000 flight attendants with 27 airlines are represented, evidently thinks so. The organization claims that the incidence of air-quality-related diseases has【23】______among its members and demands that prompt actions be【24】______to improve the conditions in the airplane cabin.
A study the AFA【25】______in 1997 uncovered about 1, 000 self-reported incidents of headaches, dizziness and memory loss【26】______flight attendants and passengers. Some flight attendants were too ill to【27】______their safety duties, while others have been permanently disabled.
Because of airlines’ efforts to【28】______their expenses, cabin-air filters are not cleaned【29】______. The complaints of flight attendants do not always give【30】______to correct maintenance. Airlines turned to recycled air, 【31】______that they would reduce some of their costs. They are not required to put filters in. Airlines are【32】______great pressure to get their flights out【33】______. So they do not pay as much attention to systems that are not as【34】______to flight schedule and safety.
Recent research findings emphasize the concern that filters can【35】______engine chemicals into the cabin air. This may not happen【36】______every flight, but it is a persistent problem.
In a study published in October 1998 an investigation was made【37】______complaints of crew members【38】______air quality and health. More than half of the 200 subjects reported health problems they【39】______to cabin air. It was concluded that these health problems were consistent with【40】______harmful gases and substances.
【37】
选项
A、on
B、from
C、to
D、in
答案
A
解析
只有on能与。investigation搭配,表示“关于…的调查”,故选A。
转载请注明原文地址:https://kaotiyun.com/show/3fPd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Somemoderncitiesareusuallyfamousforpeoplewholiveaverylongtime.
Somemoderncitiesareusuallyfamousforpeoplewholiveaverylongtime.
Somemoderncitiesareusuallyfamousforpeoplewholiveaverylongtime.
Somemoderncitiesareusuallyfamousforpeoplewholiveaverylongtime.
Somepeopleclaimthatstayinginaplaceallone’slifeisgoodforone’sgrowth,whileothersdisagreewiththeview,andth
Besidesthefunctionsasavitalentertainmentmedium,whatelsecanpeopleuseaTVas?
Besidesthefunctionsasavitalentertainmentmedium,whatelsecanpeopleuseaTVas?
Besidesthefunctionsasavitalentertainmentmedium,whatelsecanpeopleuseaTVas?
Besidesthefunctionsasavitalentertainmentmedium,whatelsecanpeopleuseaTVas?
随机试题
如图所示,车道上施划的导向箭头线表示车辆应该行驶的方向。
环境温度下降对单平衡容器来说将产生负误差,而对双平衡容器将产生正误差。
用法定公积金转增资本时,法律规定公司所存留该项公积金不得少于注册资本的()。
下列各项,仅涉及留存收益结构变化的有()。
试述人乳喂养儿粪便性状。
肺动脉瓣区第二心音减弱见于
根据有关规定,过境、转运和通运货物,运输工具负责人应向进境地海关如实申报,并应在规定的期限内运输出境。()
Eatinghealthilycostsabout$1.50moreperpersondaily,accordingtothemostthoroughreviewyetoftheaffordabilityofahe
In the open systems interconnection(OSI)reference model, "layer" means one of seven conceptually complete,(71)arranged groups
设栈S和队列Q的初始状态均为空,元素e1,e2,e3,e4,e5,e6依次通过栈S,一个元素出栈后即进入队列Q,若6个元素出队的顺序是e2,e4,e3,e6,e5,e1,则栈S的容量至少应是()。
最新回复
(
0
)