问题 选择题

从电负性的角度来判断下列元素之间易形成共价键的是(    )

A.Na和Cl

B.H和Cl

C.K和F

D.Ca和O

答案

答案:B

本题主要考查共价键的形成条件,非金属原子之间易形成共价键,活泼的金属原子和活泼的非金属原子之间易形成离子键,结合电负性与元素的性质之间的关系,我们可以得到元素的电负性值相差越大,越易形成离子键,相差越小,越易形成共价键。

单项选择题

The Bush administration is about to propose far-reaching new rules that would give people with disabilities greater access to tens of thousands of courtrooms, swimming pools, golf courses, stadiums, theaters, hotels and retail stores. The proposal would substantially update and rewrite federal standards for enforcement of the Americans With Disabilities Act, a landmark civil rights law passed with p bipartisan support in 1990. The new rules would set more stringent requirements in many areas and address some issues for the first time, in an effort to meet the needs of an aging population and growing numbers of disabled war veterans.

More than seven million businesses and all state and local government agencies would be affected. The proposal includes some exemptions for parts of existing buildings, but any new construction or renovations would have to comply. The new standards would affect everything from the location of light switches to the height of retail service counters, to the use of monkeys as "service animals" for people with disabilities, which would be forbidden’.

The White House approved the proposal in May after a five-month review. It is scheduled to be published in the Federal Register on Tuesday, with 60 days for public comment. After considering those comments, the government would issue final rules with the force of law. Already, the proposal is stirring concern. The United States Chamber of Commerce says it would be onerous and costly, while advocates for disabled Americans say it does not go far enough.

Since the disability law was signed by the first President Bush, advances in technology have made services more available to people with disabilities. But Justice Department officials said they were still receiving large numbers of complaints. In recent months, the federal government has settled lawsuits securing more seats for disabled fans at Madison Square Garden in New York and at the nation’s largest college football stadium, at the University of Michigan.

The Justice Department acknowledged that some of the changes would have significant costs. But over all, it said, the value of the public benefits, estimated at $ 54 billion, exceeds the expected costs of $ 23 billion. In an economic analysis of the proposed rules, the Justice Department said the need for an accessible environment was greater than ever because the Iraq war was "creating a new generation of young men and women with disabilities". John L. Wodatch, chief of the disability rights section of the Justice Department, said:"Disability is inherent in the human condition. The vast majority of individuals who are fortunate enough to reach an advanced age will benefit from the proposed requirements.

The current public comments on the proposal are()

A. accordant

B. pleasant

C. impractical

D. inconsistent

问答题 案例分析题

B公司是一家国有通信器材公司。经过20多年的发展,下属有8家分公司,员工1万人,年销售额约30亿元人民币。近些年来,随着市场竞争的激烈,B公司经济效益持续下降,公司高层管理者决定通过在组织内部加强绩效管理,以绩效考核来加强对各部门和各级员工的激励和管理。

于是公司高层与某咨询公司合作,对公司各个部门制定了关键缋效考核指标(KPI)和绩效目标。并规定部门绩效考核由人力资源部负责,各部门员工绩效考核由部门负责人负责考核,优秀员工不超过10%。

年终将至,公司销售部经理开始表现出忧心忡忡,因为他花了很大的气力才说服了几个大客户采购他们公司新近研发的电子产品,这批订货必须在年底前交货。然而公司新产品的生产线始终处于调试阶段,出不了产品,如果不能按时发货,客户有权取消订单。这样,销售业绩就会大幅度下降,而且新生产线的投资也会遭受很大损失。当然销售部今年的考核指标也就受影响了。

此时,公司的生产部经理却相当乐观,因为今年,他们部门的三个关键绩效考核指标(质量、生产成本和生产率)基本能完成。而新产品的生产和质量达标费时费力且效率相对低的工作,在绩效考核指标中权重不高,为了不影响部门的绩效考核,他下令减少了本应该配给新产品生产线的生产投入。

公司财务经理的日子也很轻松,他的关键绩效指标之一是缩短应收账款的周期,降低公司的财务费用。他采取的措施是缩短客户付款期限,尽管他知道这样对销售不利,但这不是他考虑的问题,为此该部门的绩效指标也完成得不错。

公司研发部主管也觉得今年的绩效考核他们应该没有什么压力,因为新产品研发数量和成本考核只占其部门绩效考核的30%,其余70%考核关注研发目队的建立和研发能力的培养。研发部门每年的优秀都是员工轮流坐庄,大家一团和气,是个看上去很融洽的团队。

人力资源部按照公司高层制定的绩效考核计划,按部就班地在准备年底各部门的绩效考核工作。

什么是绩效计划?绩效计划如何确定?