下列有关平衡常数说法正确的是( ) A.温度越高,K值越大 B.K值越大,反应的

题型:选择题

问题:

下列有关平衡常数说法正确的是(  )

A.温度越高,K值越大

B.K值越大,反应的转化率越小

C.K值越大,反应的转化率越大

D.K值的大小与起始浓度有关

考点:化学平衡常数
题型:选择题

Friday marks the 40th anniversary of one of the biggest, most expensive, most destructive social policy experiments in American history: The war on drugs. On the morning of June 17, 1971, President Richard Nixon, speaking from the Briefing Room of the White House, declared: "America’s public enemy No. 1 in the United States is drug abuse. In order to fight and defeat this enemy, it is necessary to wage a new, all-out offensive. I have asked the Congress to provide the legislative authority and the funds to fuel this kind of an offensive. This will be a worldwide offensive dealing with the problems of sources of supply, as well as Americans who may be stationed abroad, wherever they are in the world. "

So began a war that has waxed and waned, ,sputtered and sprinted, until it became an unmitigated disaster, an abomination of justice and a self-perpetuating, trillion-dollar economy of wasted human capital, ruined lives and decimated communities. Since 1971, more than 40 million arrests have been conducted for drug-related offenses. And no group has been more targeted and suffered more damage than the black community. As the American Civil Liberties Union pointed out last week, "The racial disparities are staggering: despite the fact that whites engage in drug offenses at a higher rate than African-Americans, African-Americans are incarcerated for drug offenses at a rate that is: 10 times greater than that of whites. "

An effort meant to save us from a form of moral decay became its own insidious brand of moral perversion-turning people who should have been patients into prisoners, criminalizing victimless behavior, targeting those whose first offense was entering the world wrapped in the wrong skin. It feeds our overwhelming thirst for punishment.

Last week, the Report of the Global Commission on Drug Policy, a 19-member commission that included Kofi Annan, a former U. N. secretary general, declared that: "The global war on drugs has failed, with devastating consequences for individuals and societies around the world. Fifty years after the initiation of the U.N. Single Convention on Narcotic Drugs, and 40 years after President Nixon launched the U. S. government’s war on drugs, fundamental reforms in national and global drug control policies are urgently needed. "

The White House immediately shot back: no dice. The Obama administration presented a collection of statistics that compared current drug use and demand with the peak of the late 1970s, although a direct correlation between those declines and the drug war are highly debatable. In doing so, it completely sidestepped the human, economic and societal toll of the mass imprisonment of millions of Americans, many for simple possession.

No need to put a human face on 40 years of folly when you can wrap up its inefficacy in a patchwork quilt of self-serving statistics.

It is obvious that the Obama administration()

A. is sympathetic to the wrongly imprisoned victims

B. is less tolerant of drug abuse than the Nixon administration

C. is dissatisfied with Annan’s assessment of the situation

D. has done better than the Nixon administration in the war on drugs

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已知数列{an}满足:a1=1,a2=a(a>0).数列{bn}满足bn=anan+1(n∈N*).

(1)若{an}是等差数列,且b3=12,求a的值及{an}的通项公式;

(2)若{an}是等比数列,求{bn}的前项和Sn

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人身保险的保险标的是无法估价的,其可保利益也是无法估价的。保险金只能在一定程度上帮助被保险人及其家庭缓解由于保险事故的发生所带来的经济困难。所以,()原则不适用于人身保险。

A.保险利益原则

B.损失补偿原则

C.近因原则

D.最大诚信原则

题型:选择题

辐射灭菌的缺点

A.费时

B.工效低

C.设备昂贵

D.结果反复

E.操作不科学

题型:选择题

一束平行光通过镜头时,在光轴上汇聚一点,称为()

A.焦距

B.焦点

C.主体

D.焦点距离

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