不属于养老保险的特点的是 ( )A．养老保险费用由国家、集体和个人三方共同负担

放喷管线出口距井口的距离应不小于（）。含硫油气井放喷管线出口距井口的距离应不小于（），距各种设施应不小于50m。转弯处应用角度不小于120˚的预制铸（锻）钢弯头。

A、50m；25m

B、100m；75m

C、75m；100m

下列关于开标参与人的说法，错误的是( )。

A．招标人可以委托公证机构对开标情况进行公证
B．工程建设项目的投标人的授权代表有权出席开标会
C．开标由招标人主持，也可以委托招标代理机构主持
D．投标人必须全部参加开标

某单位编制应急预案的下列做法中，正确的是()。

A．由本单位工会领导组织成立应急预案编制工作组

B．应急预案的评审均由上级主管部门或地方政府安全监管部门组织

C．预案评审后，经主要负责人签署发布并上报有关部门备案

D．除评估本单位应急能力外，还评估相邻单位应急能力

翼支付官网网址是（）。

A.mail.189.cn

B.manyou.ct10000.com

C.www.bestpay.com.cn

D.www.189.cn

Happiness can be described as a positive mood and a pleasant state of mind. According to recent investigations, sixty to seventy percent of Americans consider themselves to be moderately happy, one in twenty persons feel very happy. Psychologists have been studying the factors contributing to happiness. It is not predictable nor is a person in an apparently ideal situation necessarily happy. The ideal situation may have little to do with his actual feelings.

A good education and income are usually considered necessary for happiness. Though both may contribute, they are only chief factors if the person is seriously under - educated or actually suffering from lack of physical needs. The rich are not likely to be happier than the middle-in-come group or even those with very low incomes. People with college education are somewhat happier than those who didn’t graduated from high schools, and it is believed that this is mainly because they have more opportunity to control their lives. Yet people with a very high income and a college education may be less happy than those with the same income and no college education.

It should be noted that people quickly get used to what they have, they are happiest when they feel they are increasing their level, no matter where it stands at a given time. The best formula for happiness is to be able to develop the ability to tolerate frustration, to have a personal involvement and commitment, and to develop selfconfidence and to selfesteem.

According to the passage, people with college education（）。

A. are necessarily happier than those under- educated people

B. have a positive mood and a pleasant state of mind

C. consider themselves to be very happy

D. have more chance to control their lives