问题 选择题

关于分子热运动和内能,下列说法正确的是

A.一切物质的分子都在不停地做无规则的运动

B.扩散现象表明, 分子间存在相互作用的引力和斥力

C.物体吸收热量其内能一定增加

D.物体的质量越大,速度越快,内能就越大

答案

答案:A

扩散现象表明分子在不停的做无规则运动,并且温度越高、扩散越快,A正确B错误;物体吸收热量比对外做功少,则其内能会减少,C错误;物体的质量越大,速度越快,动能越大,动能与物体的质量和速度有关,内能与物体的温度有关,二者没有任何联系,D错误。故选A。

判断题
单项选择题

Social control refers to social processes, planned or unplanned, by which people are taught, persuaded, or forced to conform to norms. In every society, some punishments or negative sanctions are established for deviant behavior. Without deviant behavior there would not be need for social control and without social control there would not be a way of recognizing the boundary between the acceptable and the unacceptable.

Social control may be either formal or informal. Informal mechanisms include expressions of disapproval by significant others and withholding of positive rewards for disapproved behavior. Most people internalize norms in the course of socialization. This is any group’s most powerful protection against deviance, in that the individual’s own conscience operates as an agent of social control. When informal sanctions fail, formal agents of social control may be called upon. In contemporary society, such formal agents and agencies include psychiatry and other mental health professions; mental hospitals; police and courts of law; prisons; and social welfare agencies. All these formal agents function to limit, correct, and control violation of norms. Conflict theorists would also point out that social control agents and systems tend, in any society, to serve the interests of powerful groups and to enforce the norms most beneficial to those who make the rules and who, therefore, define unacceptable behavior.

Social control, whether formal or informal, has a dual function. First, it punishes the wrongdoer and reaff’irms the boundaries of acceptable behavior. Second, and less recognized, it regulates the manner in which deviants are treated.

According to conflict theorists, social control agents and systems are ().

A. liberal

B. partial

C. neutral

D. overall