小明家的电能表上标有“1200R/kWh”字样,当他家只有电视机在工作时,50分

题型:计算题

问题:

小明家的电能表上标有“1200R/kWh”字样,当他家只有电视机在工作时,50分钟转盘转动120圈,则

(1)电视机消耗了多少电能?

(2)电视机的功率多大?

考点:电功或电能的计算电功率的计算
题型:计算题

某校七年级二班的同学在学习“商鞅变法”这课后,表演了一出历史短剧。下列各项,错误的是

A.甲同学扮演秦孝公任命商鞅主持变法

B.乙同学扮演生产粮食布帛多的人获得奖励

C.丙同学扮演获得军功的大将接受爵位

D.扮演秦孝公的甲同学向全国颁旨:废除土地私有制

题型:计算题

V5.1接口由下列哪项单个链路所支持?()

A.1536kb/s

B.1920kb/s

C.64kb/s

D.2048kb/s

题型:计算题

男性,65岁,反复咳嗽、咳痰30余年,心悸、气促、下肢间歇性水肿3年,病情加重伴畏寒发热1周入院。体检:T:38℃,呼吸急促,口唇发绀,双肺叩诊过清音,中下肺有湿哕音,心率110次/分,心律齐,无杂音,双下肢重度水肿。

为明确诊断首选的检查是

A.心电图检查

B.胸部X线检查

C.痰培养及药敏试验

D.血气分析

E.血胆固醇和甘油三酯测定

题型:计算题

Questions 11-15People value money desperately because they value one another desperately; thus the cause of panic in the stock-market plunge is not that people will lose their dollars but that they will lose their sense of community. For the past couple of weeks, the nation has watched itself roll toward ruin because people were losing their money in bales. If one were tasteless enough to ask a big loser what exactly he was losing, he would sputter, "What am I losing My car! My beautiful home! My children’s educations! My clothes! My dinner! My dollars!" They are all true. People have been mourning the passing of their money for all the things that money can do, and what money can do is impressive. Money can build cities, cure diseases, and win wars. The sudden acquisition of the stuff can toss our spirits into the air like a hat.Money can do considerably more. It offers power, an almost unique form of power, not simply because it allows us to acquire and possess things but because it is we who determine its worth; we who say a ruby costs more than an apple; we who decide that a tennis court is more valuable than a book. Paradoxically, money creates a deep sense of powerlessness as well, since technically we cannot provide money for ourselves; someone or something else must do that for us-our employers or, until recently, our stocks. All that, money can do: and when such essential, familiar functions are snatched from one’s life, small wonder that people may grow wild, frantic, and even murderous.What money can do, however, is not the same as what money is. Let’s return for a moment to the theory: people value money because they value one another. In other words, the usefulness of money is directly related to and established by continuous mutual need. People work for money to buy things that other people make or do, things that they cannot or will not make or do for themselves but that they deem necessary for some definition of self-improvement.Abstractly, money is one of the ways, indeed a universally accepted way, by which we make connections. Cash is cold. So the connections may feel cold, but real blood flows through them. These connections constitute one of the central means by which societies cohere; by which they sustain and characterize themselves.When the coin begins to wobble, as it has in the past weeks, a fear seizes the mind that is disorienting. The fear is not merely that of the loss of possessions but of self-possession, which in some sense is bought and sold from person to person in infinite daily bargains. To lose money is frightening. To lose touch with others is more frightening still. Losing touch may cause the panic of the times.

Under what circumstances are connections related to cash said to be cold in the passage

A.When they are not established for societies to cohere.

B.When they are not compared to "real blood".

C.When their functions are snatched from people’s life.

D.When their worth is hard to determine and not valued.

题型:计算题

《赫尔辛基宣言》是一项国际性和人体试验道德规范的文件,在该文件中主要规定了

A.将试验与现有最佳诊治手段加以对比

B.以人作为受试者的生物医学研究方法的道德要求

C.试验备忘录是记载一些需要特殊说明的事情

D.保证每个受试者得到最佳诊治手段

E.医学目标服从于受试患者的诊治方面所得到的益处

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