万向联轴器成对使用,是为了()。A.连接距离较大的两轴 B.保证连接两轴的角速度一致

题型:单项选择题

问题:

万向联轴器成对使用,是为了()。

A.连接距离较大的两轴

B.保证连接两轴的角速度一致

C.传递较大的功率

D.防止联轴器损坏

考点:钻井柴油机工钻井柴油机工(初级)钻井柴油机工(初级)题库
题型:单项选择题

阅读理解。

     If you open today's newspaper, what do you see? Ads! Look through a magazine. More ads! Turn on

the TV. Still more ads! Everywhere you look, someone has something to sell.

     Here are some ways ads get us to buy. Some ads use famous people. Stars are paid to sell a product.

Think about it. Do they really know about medicine? Do they know about soft drinks? There people may

be famous, but they may not know about what they are selling.

     Some ads make you think you're getting the word of an expert(专家). They say, "Doctor said." A man

in a white coat comes on TV. He looks nice. "I use Bright and White," he says. This man looks like a doctor.

But he is an actor. He has been paid to sell this product.

     Does soap have anything to do with a pretty child? But ads may show their product with something nice,

such as the sun, the flowers and so on. Such an ad is about feelings rather than facts. Ads are full of strong

words. Words like "new" and "improved" have strong influence. They can help a product sell. The soap may

be called "Spring Rain". A car may be called "Tiger". Strong words work on our feelings.

     Some ads make promises(承诺). But can they keep them? No. Some ads use our fear of being too late.

"Buy now!" they say. "Selling ends soon." Check to see if this is true. Don't hurry. Take time to think. All ads

hope we will buy something, do something, or think in a certain way. Know what ads are doing. Ask questions

to yourself. Don't let their words and pictures fool you.

1. We can see ads _____.

A. on TV

B. in magazine

C. in newspaper

D. all the above

2. Some stars show in the ads because _____.

A. they know every product well

B. they are famous

C. they are all experts

D. they all like white coats 

3. According to the passage, we know that "Spring Rain" is the name of _____.

A. a kind of soap

B. a kind of car

C. a kind of medicine

D. a kind of flower 

4. The writer thinks the words and pictures in the ads _____.

A. tell us a story

B. always make us strong

C. sometimes fool us

D. keeping promise

题型:单项选择题

()不属于期间费用。

A.管理费用

B.制造费用

C.财务费用

D.销售费用

题型:单项选择题

肺的有效通气量是指

A.肺活量

B.每分肺泡通气量

C.肺通气量

D.时间肺活量

E.潮气量

题型:单项选择题

以下关于减少消耗臭氧层物质的做法,不符合《大气污染防治法》的是( )。

A.国家鼓励、支持消耗臭氧层物质替代品的生产和使用,逐步减少消耗臭氧层物质的产量,直至停止消耗臭氧层物质的生产和使用

B.在国家规定的期限内,使用消耗臭氧层物质的单位必须按照国务院有关行政主管部门核定的配额进行使用

C.在国家规定的期限内,生产消耗臭氧层物质的单位必须按照国务院有关行政主管部门核定的配额进行生产

D.国家禁止消耗臭氧层物质的进口

E.国家禁止消耗臭氧层物质的生产

题型:单项选择题

依据《安全生产法》的规定,( )全面负责领导安全生产工作,在各类重大、特大事故的应急救援工作中处于组织指挥的核心地位。

A.各级人民政府

B.安全生产监督管理部门

C.生产经营单位

D.劳动行政主管部门

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