[简答题]简述除沫器的作用。-我要搜题网

[填空题]Job stress has become a common and costly problem in the American workplace, leaving few workers untouched.
Ⅰ. General introduction to job stress
1) definition: harmful physical and (1) ______ responses that occur when the requirements of the job do not match the capabilities, resources or needs of the worker.
2) difference between challenge and job stress
--Challenge (2) ______ us psychologically and physically and when a challenge is met, we feel relaxed and satisfied.
-- In the case of job stress, the stage is set for illness, injury and job failure.
3) prevention strategies for job stress: individual and (3) ______ factors
-- (4) ______ between work and family or personal life
-- a support network of friends and coworkers
-- a relaxed and positive outlook
Ⅱ. Influences of job stress
1) early signs
-- mood and sleep disturbances
-- upset stomach and headache
-- (5) ______ with famil

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[单项选择]一台 FTP 服务器，默认情况下，必须打开（）端口。
A. 110 & 25
B. 23
C. 20 & 21
D. 80

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[多项选择]下列关于敏感性分析的表述，正确的有( )。
A. 敏感性分析可以得知不确定因素对项目效益的影响发生的可能性有多大
B. 敏感性分析是投资项目经济评价中应用十分广泛的一种技术
C. 敏感性分析中不确定因素变化程度的取值十分重要，借助它可较准确地计算敏感度系数和临界点
D. 敏感性分析可为风险分析打下基础
E. 财务评价中敏感性分析必选的指标是项目财务内部收益率

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[单项选择]关于有限责任公司的股东人数的规定，下列正确的是（）。
A. 2人以上
B. 50人以下
C. 2人以上50人以下
D. 至少有5人，没有上限

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[多项选择]风电场应将（）情况下的设备检修计划建议报电网调度机构。
A. 年度
B. 月度
C. 节日
D. 特殊运行方式

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[单项选择]As in the field of space travel, so in undersea exploration new technologies continue to appear. They share a number of similarities with each other—as well as some important differences.
Manned submersibles.(潜水器), like spaceships, must maintain living conditions in an unnatural environment. But while a spaceship must simply be sealed against the vacuum of space, a submersible must be able to bear extreme pressure if it is not to break up in deep water.
In exploring space, unmanned vehicles were employed before astronauts. In undersea exploration, on the other haled, men paved (铺路) the way, and only recently have unmanned remote-operated vehicles (ROVs) been put to use.
One reason for this is that communicating with vehicles in orbit is much easier than talking to those underwater. A vacuum is an ideal medium for radio communications, but underwater communications are limited to much slower sound waves. Thus, most undersea vehicles—particularly ROVs—operate. at the
A. more interesting
B. more attractive
C. more demanding
D. more dangerous

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[简答题]简述神经性皮炎的治则、处方？

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[简答题]简述除沫器的作用。

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