四冲程发动机定义是什么?二冲程发动机定义是什么?

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问题:

四冲程发动机定义是什么?二冲程发动机定义是什么?

考点:消防装备考试装备器材部分装备器材部分题库
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1993年8月,我国科学家利用超真空扫描隧道显微镜,在一块晶体硅的表面通过探针的作用搬走原子(构成物质的一种非常小的粒子),写下了“中国”两个字。下列说法中不正确的是 [ ]

A.上述操作中发生了化学变化

B.上述操作中只发生了物理变化

C.这两个汉字是目前世界上最小的字

D.这标志着我国科学家已进入操作原子的阶段

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确诊宫颈癌最常用的方法是()

A.宫颈刮片细胞学检查

B.宫颈活检

C.宫颈碘试验

D.白带涂片检查

E.宫颈锥形切除

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( )是保险代理人向客户推荐保险产品时的出发点。

A.客户需要
B.手续费高低
C.保险费高低
D.提成高低

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With the possible exception of equal rights, perhaps the most controversial issue across the United States today is the death penalty. Many argue that it is an effective deterrent (威慑) to murder, while others maintain there is no convincing evidence that the death penalty reduces the number of murders.

The principal argument advanced by those opposed to the death penalty. basically, is that Lt is cruel and inhuman punishment, that it is the mark of a brutal society, and finally that it is of questionable effectiveness as a deterrent to crime anyway.

In our opinion, the death penalty is a necessary evil. Throughout recorded history there have always been those extreme individuals in every society who were capable of terribly violent crimes such-as murder. But some are more extreme than others.

For example, it is one thing to take the life of another in a fit of blind rage, but quite another to coldly plot and carry out the murder of one or more people in the style of a butcher. Thus, murder, like all other crimes, is a matter of relative degree. While it could be argued with some conviction that the criminal in the first instance should be merely isolated from society, such should not be the fate of the latter type murderer.

The value of the death penalty as a deterrent to crime may be open to debate. But the over whelming majority of citizens believe that the death penalty protects them. Their belief is reinforced by evidence which shows that the death penalty deters murder. For example, from 1954 to 1963, when the death penalty was consistently imposed in California, the murder rate remained between three and four murders for each 100000 population. Since 1964 the death penalty has been imposed only once, and the murder rate has risen to 10.4 murders for each 100000 population. The sharp climb in the state’s murder rate, which began when executions stopped, is no coincidence (巧合). It is convincing evidence that the death penalty does deter many murderers. If the bill reestablishing the death penalty is vetoed (否决), innocent people will be murdered— some whose lives may have been saved if the death penalty were in effect. This is literally a life or death matter. The lives of thousands of innocent people must be protected.

The author’s response to those who argue the death penalty for all degrees of murders would most likely be ().

A. supportive

B. hostile

C. negative

D. friendly

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某企业2012年年初未分配利润的贷方余额为400万元,本年度实现的净利润为200万元,分别按10%和5%提取法定盈余公积和任意盈余公积。假定不考虑其他因素,该企业2012年年末未分配利润的贷方余额应为()万元。

A、410

B、510

C、540

D、570

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