非概率抽样指每一个对象被抽中的概率是() A.未知的 B.已知的 C.不可能的 D.

题型:单项选择题

问题:

非概率抽样指每一个对象被抽中的概率是()

A.未知的

B.已知的

C.不可能的

D.一样的

E.确定的

考点:职业卫生(医学高级)职业卫生职业卫生题库
题型:单项选择题

亚洲地域辽阔,各地自然环境对人类活动影响很大。生活在东南亚印度尼西亚加里曼丹岛的达雅克人,聚居在高脚的木质长屋里,有的长屋长达200米。下列说法与形成当地这种聚落结构形式无关的是

A.气候湿热

B.人口稠密

C.抵御毒虫、猛兽

D.抵御酷寒

题型:单项选择题

我国《合同法》的适用范围包括()。

A.婚姻关系

B.债权债务关系

C.收养、监护关系

D.行政管理关系

题型:单项选择题

下列各项中,应计入销售费用的有( )。

A.销售商品发生的商业折扣

B.采用一次摊销法结转首次出借新包装物成本

C.结转出租包装物报废的残料价值

D.结转随同商品出售并单独计价的包装物成本

E.结转随同商品出售不单独计价的包装物成本

题型:单项选择题

男性,45岁,因幽门梗阻行胃次全切除术后第5天。术后排气3次,但腹胀逐渐加重,恶心,无呕吐,腹胀明显,无压痛,无反跳痛,肠鸣音弱,心电图示T波降低。

为了证实诊断应做哪种检查

A.腹部B超

B.腹部穿刺

C.测定血钾

D.胃肠造影

E.腹部CT

题型:单项选择题

How often one hears children wishing they were grown up, and old people wishing they were young again. Each age has its pleasures and its pains, and the happiest person is the one who enjoys what each age gives him without wasting his time in useless regrets.

Childhood is a time when there are few responsibilities to make life difficult. If a child has good parents, he is fed, looked after and loved, whatever he may do. It is impossible that he will ever again in his life be given so much without having to do anything in return. In addition, life is always presenting new things to the child-things that have lost their interest for older people because they are too well-known. But a child has his parents, he is not so free to do what he wishes to do. He is continually being told not to do things or being punished for what he has done wrong. When the young man starts to earn his own living, he can no longer expect others to pay for his food, his clothes, and his room, but has to work if he wants to live comfortably. If he spends most of his time playing about in the way that he used to as a child, he will go hungry. And if he breaks the laws of society as he used to break the laws of his parents, he may go to prison. If, however, he works hard, keeps out of trouble and has good health, he can have the great happiness of building up for himself his own position in society.

小题1:according to the second paragraph, the writer thinks that _______.

A.life for a child is comparatively easy

B.a child is always loved whatever he does

C.if much is given to a child, he must do something in return

D.only children are interested in life小题2:After a child grows up, he ________.

A.will have little time playing

B.has to be successful in finding a job

C.can still ask for help in time of trouble

D.should be able to take care of himself小题3:Which of the following statements is NOT true according to the passage?

A.People are often satisfied with their life.

B.Life is less interesting for old people.

C.Adults are freer to do what they want to do.

D.Adults should no longer rely on others.小题4:The main idea of the passage is ________.

A.life is not enjoyable since each age has some pains

B.young men can have the greatest happiness if they work hard

C.childhood is the most enjoyable time in one’s life

D.one is the happiest if he can make good use of each age in his life小题5:The paragraph following this passage will most probably discuss _______.

A.examples of successful young men

B.how to build up one’s position in society

C.joys and pains of old people

D.what to do when one has problems in life

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