校验润滑系统、燃油供给系统的全部阀门属于柴油机的()保养内容。A.周 B.月 C.日

题型:单项选择题

问题:

校验润滑系统、燃油供给系统的全部阀门属于柴油机的()保养内容。

A.周

B.月

C.日

D.季

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

活动矫治器的主要固位装置是()。

A.箭头卡环

B.带环

C.弹性橡皮圈

D.曲舌簧

E.横腭杆

题型:单项选择题

阅读理解。

     The private automobile (私家车) has long played an important role in the United States. In fact, it has

become a necessary and important part of the American way of life. In 1986, sixty-nine percent of American

families owned at least one car, and thirty-eight percent had more than one. By giving workers rapid

transportation, the automobile has freed them from having to live near their place of work. This has encouraged

the growth of the cities, but it has also led to traffic problems.

     For farm families the automobile is very helpful. It has made it possible for them to travel to town very

often for business and for pleasure, and also to transport their children to distant schools.

     Family life has been affected (影响) in various ways, The car helps to keep families together when it is

used for picnics, outings, and other shared experiences. However, when teenage children have the use of the

car, their parents can't keep an eye on them. There is a great danger if the driver has been drinking alcohol or

taking drugs, or showing off by speeding or breaking down traffic laws. Mothers of victims (受害者) of such

accidents have formed an organization called MADD (Mothers Against Drunk Driving). These women want to

prevent further tragedies (悲剧). They have worked to encourage the government to limit the youngest drinking

age, Students have formed a similar organization, SADD (Students Against Drunk Driving) and are spreading

the same message among their friends.

     For many Americans the automobile is a necessity. But for some, it is also a mark of social position and for

young people, a sign of becoming an adult. Altogether, cars mean very much to Americans.

1. Which of the following is NOT mentioned in the text?

A. Cars have encouraged the growth of the cities.

B. Cars can bring families together when they go for picnics.

C. Cars have enabled people to live far from their place of work.

D. Cars help city families to transport their children to faraway schools.

2. What has been done to deal with the problem of drunk driving?

A. Patents have paid more attention to their children.

B. Some organizations have been set up against drunk driving.

C. Mothers have tried to persuade their children not to drink alcohol.

D. University students have asked the government to solve the problem.

3. We can infer from the text that _____ in America.

A. it will be more difficult for people to get new cars

B. parents will not allow their children to have their own cars

C. the government will encourage people to use public transportation

D. cars will still be popular though they have caused many problems

题型:单项选择题

我国负责按照国民经济和社会发展规划、产业政策、外债管理及国外贷款使用原则和要求,编制国外贷款备选项目规划,并据此制定、下达年度项目签约计划的部门是______。

A.国务院
B.国家发展改革委员会
C.财政部
D.商务部

题型:单项选择题

对于大位移井在正常情况下,如果钻井液携岩屑性能较好,同时排量合适,就没有必要进行短起下作业。

题型:单项选择题

为什么有些闪烁体可用于做粒子种类的鉴别?

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