[判断题] 对均匀电场,气隙中各处电场强度按双曲线函数规律变化。-我要搜题网

[单项选择]As we have seen in earlier chapters, the American definition of success is largely one of acquiring wealth and a higher material standard of living. It is not surprising, therefore, that Americans have valued education for its monetary value. The belief is widely spread in the United States that the more schooling people have, the more money they will earn when they leave school. The belief is strongest regarding the desirability of an undergraduate university degree, or a professional degree such as medicine or law following the undergraduate degree. The money value of graduate degrees in "non-professional" fields such as art, history, or philosophy is not as great.
This belief in the monetary value of education is supported by statistics on income. Ben Wattenberg, a social scientist, estimated that in the course of a lifetime a man with a college degree in 1972 would earn about ￥380,000 more than a man with just a high school diploma. Perhaps this helps to explain survey finding
A. A master’s degree in literature.
B. A master’s degree in specialized fields.
C. A master’s degree in pure maths.
D. A master’s degree in anthropology.

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[单选题]At the University of Kansas art museum,scientists tested the effect of different colored walls on two groups of visitors to an exhibit of paintings.For the first group the room was painted white;for the second,dark brown.Movement of each group was followed by an electrical equipment under the carpet.The experiment showed that those who entered the dark brown walked more quickly,covered more area,and spent less time in the room than people in the white one.Dark brown made people more active,but the activity ended sooner.Not only the choice of colors but also the general appearance of a room affects those inside.Another experiment presented people with photographs of faces whose energy was to be commented.Three groups of people were used;each was shown the same photos,but each group was in an ordinary room—a nice office.The third was in a tastefully designed living room with carpeting.Results showed that the people in the beautiful room tend to give higher marks to the faces than those in the ugly room did.Other studies that students do better on tests taken in comfortable room than in ordinary-looking or ugly rooms. Which of the following is the best expression of the main idea of this passage
A.People in beautiful rooms tend to give higher marks to photos of faces than people in ugly rooms
B.The color and general appearance of a room have a deeper effect on the behavior of the people in it
C.The University of Kansas has studied the effects of the color of room on people’s behavior
D.Beautifully furnished,light-coloured rooms make people more comfortable than ugly,dark rooms

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[多选题]电压互感器停用时应注意（）。
A.A-不能使运行中的保护自动装置失去电压
B.B-先断开互感器一次侧电源，后将二次开关全部断开
C.C-应先进行电压切换
D.D-防止反充电，取下二次熔断器

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[单选题]旅客携带物品超过免费重量时，其超重部分应补收（）包裹运费。
A.一类
B.二类
C.三类
D.四类

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[单选题]广播报文对时GPS通过通信报文将时间发送至总控通信单元。优点是省去了专用硬件设备，不需要单独敷设电缆，降低了成本。缺点是对时总线经过多个环节，对时存在一定的时延，可能造成不同装置的时间会相差(_)以上。
A.10ms
B.50ms
C.100ms
D.1s
E./
F./

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[判断题]计算机网络面临的安全威胁有计算机病毒和网络攻击。
A.正确
B.错误

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[单项选择]以下选项不属于路由选择算法参数的是（）。
A. 稳定性
B. 可靠性
C. 延时
D. 跳数

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[单选题]䁉.(298411)电话集中机分盘“端子2”的接法( )。(1.0分)
A.A、正电源
B.B、振铃
C.C、回铃
D.D、主振出