当发现电气设备发生火灾时,现场人员尽可能的采取灭火措施,控制火势蔓延和扩大,并应首先

题型:判断题

问题:

当发现电气设备发生火灾时,现场人员尽可能的采取灭火措施,控制火势蔓延和扩大,并应首先切断其电源。()

考点:综采维修电工综采维修电工(综合练习)综采维修电工(综合练习)题库
题型:判断题

面向对象的主要特征包括对象唯一性、封装性、继承性和______。

A.多态性

B.完整性

C.可移植性

D.兼容性

题型:判断题

A recent study, which was published in last week’s Journal of the American Medical Association, offers a picture of how dangerous it is to get a lift from a teenage driver. Indeed, a 16-year-old driver with three or more passengers has three times the possibility of a serious accident, compared with a teenager driving alone.

The authors also found that the death rates for teenage drivers increased greatly after 10 p.m., and especially after midnight. With passengers in the car, the driver was even more likely to die in a late-night accident.

Robert Foss, a scientist at the University of North Carolina Highway Safety Research Center, says the higher death rates for teenage drivers have less to do with “really stupid behavior” than with just a lack of driving experience. “The basic issue is that adults who are responsible for giving out licenses fail to recognize how complex and skilled driving is.” he says.

Both he and the author of the study believe that the way to mitigate (使缓解) the problem is to have states set up so-called graduated licensing systems, in which getting a license is a process with several stages. A graduated license requires that a teenager first prove himself able to drive in the presence(在场)of an adult, followed by a period of driving with night of passenger restrictions (限制) before graduating to full driving rights.

Graduated licensing systems have reduced teenage driver crashes, according to recent studies.

小题1:Which of the following situations is most dangerous according to the passage?

A.Adults giving a lift to teenagers on the highway after 10 p.m.

B.Adults driving with three or more teenage passengers late at night.

C.A teenager driving after midnight with passengers in the car.

D.A teenager getting a lift from a stranger on the highway at midnight.小题2:According to Robert Foss, the high death rate of teenage drivers is mainly due to _______.

A.their frequent driving at night

B.their lack of driving experience

C.their wrong way of driving

D.their driving with passengers小题3:According to Paragraph 3, which of the following statements is TRUE?

A.Teenagers should spend more time learning to drive.

B.Driving is a skill too complex for teenagers to learn.

C.Restrictions should be forced on teenagers demanding to take driving licenses.

D.The licensing department is partly responsible for teenagers’ driving accidents.小题4:A suggested measure to be taken to reduce teenagers’ driving accidents is that ______.

A.driving in the presence of an adult should be made a rule

B.they should be forbidden to take on passengers

C.they should not be allowed to drive after 10 pm

D.the licensing system should be improved

题型:判断题

补体系统的生物活性不包括()

A.激活细胞因子作用

B.溶细胞作用

C.免疫复合物的清除

D.炎症介质作用

E.中和与溶解蛋白作用

题型:判断题

根据法律规定,法人是指______。

A.具有民事权利能力和民事行为能力的组织
B.具有完全民事行为能力的机构负责人
C.具有完全民事行为能力的单位法定代表人
D.非公有制企业组织

题型:判断题

智能建筑工程分户验收时应主要检查()。

A.多媒体箱安装

B.信息插座面板安装

C.访客对讲系统安装

D.户外消防系统

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