合理选择数控机床是十分重要的,对于非常复杂的曲面零件应选用加工中心。

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问题:

合理选择数控机床是十分重要的,对于非常复杂的曲面零件应选用加工中心。

考点:数控机床操作工考试数控技能大赛考试数控技能大赛考试题库
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在下图所示的原电池中,下列说法错误的是

A.溶液的pH逐渐变小

B.负极附近SO42-离子浓度逐渐增大

C.正极有H2逸出

D.正极质量无变化

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精馏塔内下流液体量与上升蒸汽量之比,称为()

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(一)
假设2009年末某商业银行的有关指标如下:流动性资产余额为160亿元,流动性负债余额为800亿元;贷款实际计提损失准备为1200亿元,应提准备为1500亿元;最大一家集团客户授信总额为36亿元;资本净额180亿元。
回答下列问题:

该商业银行的流动比例为( )。

A.20%

B.50%

C.60%

D.10%

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急性氨基甲酸酯类农药中毒可用()()

A.胆碱酯酶复能剂

B.抗胆碱药

C.两者均可

D.两者均否

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Should anyone much care whether an American boy living overseas gets six vicious thwacks on his backside So much has been argued, rejoined and rehashed about the case of Michael Fay, an 18-year-old convicted of vandalism and sentenced to a caning in Singapore, that an otherwise sorry little episode has shaded into a certified International Incident, complete with intercessions by the U. S. head of state. An affair has outraged American libertarians even as it has animated a general debate about morality East and West and the proper functioning of U.S. law and order.

Which, to all appearances, is what Singapore wanted. The question of whether anyone should care about Michael Fay is idle. though Singapore officials profess shock at the attention his case had drawn, they know Americans care deeply about the many sides of this issue. Does a teenager convicted of spraying cars with easily removable paint deserve half a dozen powerful strokes At what point does swift, sure punishment become torture By what moral authority can America, with its high rates of lawlessness and license, preach of a safe society about human rights

The caning sentence has concentrated minds wondrously on an already lively domestic debate over what constitutes a due balance between individual and majority rights. Too bad Michael Fay has become a focus for this discussion. Not only does he seem destined to be pummeled and immobilized, but the use of Singapore as a standard for judging any other society, let alone the cacophonous U. S. , is fairly worthless.

To begin with, Singapore is an offshore republic that tightly limits immigration. Imagine crime-ridden Los Angeles, to which Singapore is sometimes contrasted, with hardly any inflow of the hard-luck, often desperate fortune seekers who flock to big cities. Even without its government’s disciplinary measures, Singapore more than plausibly would be much the same as it is now. An academic commonplace today is that the major factor determining social peace and prosperity is culture--a sense of common identity, tradition and values.

Unlike Singapore, though, the U. S. today is a nation in search of a common culture, trying to be a universal society that assimilates the traditions of people from all over the world. Efforts to safeguard minority as well as individual rights have produced a gridlock in the justice system. Its troubles stem more from the decay of family life than from any government failures. Few societies can afford to look on complacently. As travel eases and cultures intermix, the American experience is becoming the world’s.

The circumstances of this affair--evidently no Singaporean has ever been punished under the Vandalism Act for defacing private property--suggest that Singapore has used Fay as an unwilling point man in a growing quarrel between East and West about human rights.

The word "cacophonous" (Para. 3) most probably means()

A. commonplace

B. assimilative

C. disharmonious

D. stereotyped

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