抛物线y=-2(x-3)2+4的顶点坐标是______.

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问题:

抛物线y=-2(x-3)2+4的顶点坐标是______.

考点:二次函数的定义
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How many really suffer as a result of labor market problems This is one of the most critical yet contentious social policy questions. In many ways, our social statistics exaggerate the degree of hardship. Unemployment does not have the same dire consequences today as it did in the 1930’s when most of the unemployed were primary breadwinners, when income and earnings were usually much closer to the margin of subsistence, and when there were no countervailing social programs for those failing in the labor market.

Increasing affluence, the rise of families with more than one wage earner, the growing predominance of secondary earners among the unemployed, and improved social welfare protection have unquestionably mitigated the consequences of joblessness. Earnings and income data also overstate the dimensions of hardship. Among the millions with hourly earnings at or below the minimum wage level, the over-whelming majority are from multiple earners, relatively affluent families. Most of those counted by the poverty statistics are elderly or handicapped or have family responsibilities which keep them out of the labor force, so the poverty statistics are by no means an accurate indicator of labor market pathologies.

Yet there are also many ways our social statistics underestimate the degree of labor-market-related hardship. The unemployment counts exclude the millions of fully employed workers whose wages are so low that their families remain in poverty. Low wages and repeated or prolonged unemployment frequently interact to undermine the capacity for self-support. Since the number experiencing joblessness at some time during the year is several times the number unemployed in any month, those who suffer as a result of forced idleness can equal or exceed average annual unemployment, even though only a minority of the jobless in any month really suffer. For every person counted in the monthly unemployment tallies, there is another working part-time because of the inability to find fulltime work, or else outside the labor force but wanting a job. Finally, income transfers in our country have always focused on the elderly, disabled, and dependent, neglecting the needs of the working poor, so that the dramatic expansion of cash and in kind transfers does not necessarily mean that those failing in the labor market are adequately protected.

As a result of such contradictory evidence, it is uncertain whether those suffering seriously as a result of thousands or the tens of millions, and, hence, whether high levels of joblessness can be tolerated or must be countered by job creation and economic stimulus. There is only one area of agreement in this debate—that the existing poverty, employment, and earnings statistics are inadequate for one of their primary applications, measuring the consequences of labor market problems.

The author’s purpose in citing those who are repeatedly unemployed during a twelve-month period is most probably to show that()

A. there are several factors that cause the payment of low wages to some members of the labor force

B. unemployment statistics can underestimate the hardship resulting from joblessness

C. recurrent inadequacies in the labor market can exist and can cause hardships for individual workers

D. a majority of those who are jobless at any one time does not suffer severe hardship

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何先生,67岁,因大便次数增多、排黏液血便、便秘2个月而来院诊治,怀疑为直肠癌收入院。

手术后的护理,以下不正确的是()。

A.保持胃管引流通畅

B.结肠造瘘口开放后取右侧卧位

C.若有排便不畅可扩肛或灌肠

D.造瘘口周围皮肤涂氧化锌软膏

E.避免进食产气性食物

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(2007,12)甲公司与乙公司签订的商标使用许可合同中规定:甲公司将其所有“葵花”牌商标许可乙公司在全国范围内使用,期限5年。甲公司在此期限内可以继续使用该商标但不得许可他人使用。此商标转让属于( )。

A.独占使用许可

B.排他使用许可

C.普通使用许可

D.特殊使用许可

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调色中需要用的设备有()。

A.色母

B.调色架

C.电子秤

D.配色箱

E.喷涂样板设备

F.色卡资料

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离休干部因病转外地就医,需一名陪护人员,其所需路费由本人承担,对不对?

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