哪种类型变压器安装在建筑内?() A.油浸式 B.干式 C.自耦式

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问题:

哪种类型变压器安装在建筑内?()

A.油浸式

B.干式

C.自耦式

考点:通信电力机务员通信电力机务员题库
题型:单项选择题

如图所示,电流表A3示数是0.52 A,电流表A2示数是0.24 A,则电流表A1示数可能是_____A.

题型:单项选择题

一般认为干道的适当间距在______m,相当于干道网密度为______km/m2

A.500~800 1.8-1.5

B.600~800 2.4-1.5

C.700~1100 2.8-1.8

D.700~1200 2.8~1.8

题型:单项选择题

PART FOUR  WRITING
SECTION A(10%)  Directions: Read the following passage.Complete the diagram by using the information from the passage.      Write NO MORE THAN THREE WORDS for each answer.
Internet use appears to cause a decline in psychological well-being, according to research at Carnegie Mellon University.
Even people who spent just a few hours a week on the Internet experienced more depression and loneliness than those who logged on less frequently, the two-year study showed. And it wasn’t that people who were already feeling bad spent more time on the Internet, but that using the Net actually appeared to cause the bad feelings.
Researchers are puzzled over the results, which were completely contrary to their expectations. They expected that the Net would prove socially healthier than television, since the Net allows users to choose their information and to communicate with others.
The fact that Internet use reduces time available for family and friends may account for the drop in well-being, researchers hypothesized. Faceless, bodiless “virtual” communication may be less psychologically satisfying than actual conversation, and the relationships formed through it may be shallow. Another possibility is that exposure to the wider world via the Net makes users less satisfied with their lives.
“But it’s important to remember this is not about the technology itself; it’s about how it is used,” says psychologist Christine Riley of Intel, one of the study’s sponsors.” It really points to the need for considering social factors in terms of how you design applications and services for technology.”
Title 71.________________ 
  72____________      
Internet use causing 73.________________ in psychological well-being
Study showing
People on the Internet feeling 74________________
 
75.________________
● Having nothing with the technology itself
● Spending more time on the Internet reducing time available for 76.__________
●Faceless and bodiless virtual communication leading to a lack of 77.___________________
● Exposure to the wider world via the Net making users less satisfied with 78.__________________
 79. ___________ on how to use the Internet
● Time spent on the Internet should be arranged properly .
● 80. ___________should be considered in terms of designing applications and services.
题型:单项选择题

造成粉尘进一步扩散,污染车间空气环境的主要原因是( )。

A.一次尘化作用
B.二次尘化作用
C.惯性力
D.分子扩散

题型:单项选择题

找出这辆故障车有哪种违法行为?()

A.没有设置警告标志

B.没有开启危险报警闪光灯

C.没有将车停到路边

D.没有立即排除故障

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