perceived-control是什么意思

求翻译：Perceived levels of importance of various genres of metrics

英语翻译
Customer self-service systems:The effects of perceived Web qualityx0bwith service contents on enjoyment,anxiety,and e-trust
客户自助式服务系统:感知web服务质量的效果藉由在愉快、焦虑和电子信赖方面的服务内
理通顺点.

请问这道英语语法题
There ought to be less anxiety over the perceived risk of getting cancer than ＿in the public today.A.exists B.exist C.existing D.existed
为什么选A项?

the new experience is perceived to be interesting.可否将to be 去掉,why?

be 的用法
how a compoany is perceived can be a serious asset or a liability that can't be judged from a balance sheet

英语翻译
there ought .to be less anxiety over the perceived risk of mountain climbing than（）in the public today.Aexists B.existingC to exist

英语翻译
the way you dress affects the way you are perceived,and the way you are perceived,is the way you are treated.
中文意思是了解了,但是就是怎么也翻不出来～

perceived organisational support在组织行为学中是什么意思
希望学管理学的大侠们,帮一下忙,我不太清楚这是什么内容,当然我不是要英文翻译,非常感谢

英语翻译
it is these predicted shifts in perceived intrinsic rewards that may theoretically underlie a negative relationship between intrinsic and extrinsic motivation.
翻译,然后帮我解释一下哪个是主谓宾.

英语翻译
The scholar indicated that the perceived risk depends on the buyer’s general internet expertise as well as on the information provided on the web site.In any case,it can be supposed that the perceived risk will lead consumers to consider different signals when forming their attitude and feelings towards a web site (satisfaction and trust).
the contributions of this paper are the analysis of risk as a moderating variable,which can produce differences in perceptions,attitude and behaviour depending on the level of risk the consumer
perceives when buying online.（

求翻译一个英语标题.
The effect of perceived trust on electronic commerce:Shopping online for tourism
products and services in South Korea

英语翻译
"You have to decide how you want to be perceived when someone searches your name ,"says Sorenson,"whether you are a potentioal employer,or a client,or a student,when you're looking at reputation management from a search engine viewpoint,it's primarily played on Google.And most people don't go past page one."