下列说法正确的是 A.水的离子积KW随温度、外加酸(碱)浓度的改变而改变 B.难

题型:选择题

问题:

下列说法正确的是

A.水的离子积KW随温度、外加酸(碱)浓度的改变而改变

B.难溶电解质作比较时,Ksp小的溶解度一定小

C.对已达平衡的反应,仅改变浓度,若平衡移动,则平衡常数(K)一定改变

D.Ksp只与难溶电解质的性质和温度有关,而与溶液中的离子浓度无关

考点:沉淀溶解平衡
题型:选择题

找出下列句中的整体认读音节,用横线画出来。

①yì shēng zhī jì zài yú qín  ②qiān gōng lǐ ràng shì měi dé

题型:选择题

European football is played in more than 100 countries now, _____ it the most popular sport in the

world.[ ]

A. making        

B. makes          

C. made          

D. to made

题型:选择题

由动态三要素组成的会计等式是()。

A.资产=负债+所有者权益

B.资产=负债+权益

C.收入-费用=利润

D.资产+费用=负债+所有者权益

题型:选择题

简要病史:女性,42岁,心悸2年,加重3个月答题要求:请围绕以上简要病史,口诉该患者现病史及相关病史应询问的内容。

题型:选择题

Almost all our major problems involve human behavior, and they cannot be solved by physical and biological technology alone. What is needed is a technology of behavior, but we have been slow to develop the science from which such a technology might be drawn, (46) One difficulty is that almost all of what is called behavioral science continues to trace behavior to states of mind, feelings, traits of character, human nature, and so on. Physics and biology once followed similar practices and advanced only when they discarded them, (47) The behavioral sciences have been slow to change partly because the explanatory items often seem to be directly observed and partly because other lands of explanations have been hard to find. The environment is obviously important, but its role has remained obscure. It does not push or pull, it selects, and this function is difficult to discover and analyze. (48). The role of natural selection in evolution was formulated only a little more than a hundred years ago, and the selective role of the environment in shaping and maintaining the behavior of the individual is only beginning to be recognized and studied. As the interaction between organism and environment has come to be understood, however, effects once assigned to states of mind, feelings, and traits are beginning to be traced to accessible conditions, and a technology of behavior may therefore become available. It will not solve our problems, however, until it replaces traditional pre-scientific views, and these are ply entrenched. Freedom and dignity illustrate the difficulty. (49) They are the possessions of the autonomous (self-governing) man of traditional theory, and they are essential to practices in which a person is held responsible for his conduct and given credit for his achievements. A scientific analysis shifts both the responsibility and the achievement to the environment. It also raises questions concerning "values". Who will use a technology and to what ends (50) Until these issues are resolved, a technology of behavior will continue to be rejected, and with impossibly the only way to solve our problems.

(47) The behavioral sciences have been slow to change partly because the explanatory items often seem to be directly observed and partly because other lands of explanations have been hard to find.

更多题库