发展社会主义民主,最根本的是() A.坚持党的领导 B.人民当家作主 C.依法治国有

题型:多项选择题

问题:

发展社会主义民主,最根本的是()

A.坚持党的领导

B.人民当家作主

C.依法治国有机统一

D.坚持和谐共处

考点:浙江知识竞赛科学发展观科学发展观题库
题型:多项选择题

病原体引起免疫反应,并发生明显的组织损伤()。

A.慢性感染特点

B.病原携带者特点

C.急性感染特点

D.隐性感染特点

E.显性感染特点

题型:多项选择题

(附加题)(10分)

自由电子激光器原理如图,自由电子经电场加速后,从正中央射入上下排列着许多磁铁的磁场区域,相邻两磁铁相互紧靠且极性相反.电子在磁场力作用下 “扭动”着前进,每“扭动”一次就会发出一个光子(不计电子发出光子后能量损失),两端的反射镜使光子来回反射,最后从透光的一端发射出激光.

(1)若激光器发射激光的功率为P=6.63×109W,频率为ν=1016Hz,试求该激光器每秒发出的光子数(普朗克常量h=6.63×10-34J•s);

(2)若加速电压U=1.8×104V,电子质量m=9.0×10-31kg,电子电量e=1.6×10-19C,每对磁极间的磁场可看作是匀强磁场,磁感应强度B=9.0×10­-4T,每个磁极左右宽l1=0.30m,垂直纸面方向长l2=1.0m.当电子从正中央垂直磁场方向射入时,电子可通过几对磁极?

题型:多项选择题

如图所示,水平面内两根光滑的平行金属导轨,左端与电阻R相连接,匀强磁场B竖直向下分布在导轨所在的空间内,质量一定的金属棒垂直于导轨并与导轨接触良好。若对金属棒施加一个水平向右的外力F,使金属棒从a位置由静止开始向右做匀加速运动并依次通过位置b和c。若导轨与金属棒的电阻不计,a到b与b到c的距离相等,则下列关于金属棒在运动过程中的说法正确的是

[ ]

A、在从a到b与从b到c的两个过程中,通过金属棒的横截面的电量之比为1:2

B、金属棒通过b、c两位置时,外力F的大小之比为1:

C、金属棒通过b、c两位置时,电阻R的电功率之比为1:2

D、在从a到b与从b到c的两个过程中,电阻R上产生的热量之比为1:1

题型:多项选择题

“在生命的长河里,总有一种理想让你永不放弃;总有一种力量让你奋然前行。”这启示我们实现人生价值要()

A.有坚定的理想信念

B.有百折不挠的精神

C.全面提高个人素质

D.以客观条件为基础

题型:多项选择题

Law-and-order is the longest-running and probably the best-loved political issue in the U.S. history.

(46) Yet it is painfully apparent that millions of Americans who would never think of themselves as lawbreakers, let alone criminals, are taking increasing liberties with the legal codes that are designed to protect and nourish their society. Indeed, there are moments today when it seems as though the scofflaw represents the wave o the future. (47) Harvard Sociologist David Riesman suspects that a majority of Americans have blithely taken to committing supposedly minor derelictions as a matter of course. Already, Riesman says, the ethic of U.S. society is in danger of becoming this. "you’re a fool if you obey the rules. "

Nothing could be more obvious than the evidence supporting Riesman. Scofflaws abound in amazing variety. The graffiti-prone turn public surfaces into visual rubbish. Bicyclists often ride as though two-wheeled vehicles are exempt from all traffic laws. Litterbugs convert their communities into trash dumps. (48) Widespread flurries of ordinances have failed to clear public places of high-decibel portable radios, just as earlier laws failed to wipe out the beer-soaked hooliganism that plagues many parks. Tobacco addicts remain hopelessly blind to signs that say NO SMOKING. Respectably dressed pot smokers no longer bother to duck out of public sight to pass around a joint. The flagrant use of cocaine is a festering scandal in middle-and-upper-class life. And then there are (hello, Everybody!) the jaywalkers.

The dangers of scofflawry vary widely. (49) The person who illegally spits on the sidewalk remains disgusting, but clearly poses less risk to others than the company that illegally buries hazardous chemical waste in an unauthorized location. The farebeater on the subway presents less threat to life than the landlord who ignores fire safety statutes. The most immediately and measurably dangerous scofflawry, however, also happens to be the most visible. The culprit is the American driver, whose lawless activities today add up to a colossal public nuisance. (50) The hazards range from routine double parking that jams city streets to the drunk driving that kills some 25,000 people and injures at least 650,000 others yearly. Illegal speeding on open highways New surveys show that on some interstate highways 83% of all drivers are currently ignoring the federal 55 mph speed limit.

(46) Yet it is painfully apparent that millions of Americans who would never think of themselves as lawbreakers, let alone criminals, are taking increasing liberties with the legal codes that are designed to protect and nourish their society.

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