根据《民法通则》的有关规定,诉讼时效期间从( )起计算。A.法律行为生效时B.当事

题型:单项选择题

问题:

根据《民法通则》的有关规定,诉讼时效期间从( )起计算。

A.法律行为生效时
B.当事人知道或者应当知道权利被侵害时
C.当事 * * 利被侵害时
D.发生争议时

考点:会计资格考试初级会计(经济法)初级经济法基础
题型:单项选择题

在水平足够长的固定木板上,一小物块以某一初速度开始滑动,经一段时间t后停止,现将该木板改置成倾角为θ的斜面,让小物块以相同的初速度沿木板上滑,若小物块上滑到最高位置所需时间也为t,则小物块与木板之间的动摩擦因数μ为(  )

A.

sinθ
1+cosθ

B.

sinθ
1-cosθ

C.

cosθ
1-cosθ

D.

cosθ
1+cosθ

题型:单项选择题

Our risk of cancer rises dramatically as we age. So it makes sense that the elderly should be routinely screened for new tumors — or doesn’t it?

  While such vigilant(警觉的)tracking of cancer is a good thing in general, researchers are increasingly questioning whether all of this testing is necessary for the elderly. With the percentage of people over age 65 expected to nearly double by 2050, it’s important to weigh the health benefits of screening against the risks and costs of routine testing.

  In many cases, screening can lead to additional biopsies and surgeries to remove cancer, which can cause side effects, while the cancers themselves may be slow-growing and may not pose serious health problems in patients’ remaining years. But the message that everyone must screen for cancer has become so ingrained that when health care experts recommended that women under 50 and over 74 stop screening for breast cancer, it caused a riotous reaction among doctors, patients and advocacy groups. 

  It’s hard to uproot deeply held beliefs about cancer screening with scientific data. Certainly, there are people over age 75 who have had cancers detected by routine screening, and gained several extra years of life because of treatment. And clearly, people over age 75 who have other risk factors for cancer, such as a family history or prior personal experience with the disease, should continue to get screened regularly. But for the remainder, the risk of cancer, while increased at the end of life, must be balanced with other factors like remaining life expectancy(预期寿命).

  A recent study suggests that doctors start to make more objective decisions about who will truly benefit from screening- especially considering the explosion of the elderly that will soon swell our population.

  It’s not an easy calculation to make, but one that make sense for the whole patient. Dr. Otis Brawley said, “Many doctors are ordering these tests purely to cover themselves. We need to think about the rational use of health care and stop talking about the rationing of health care.”

  That means making some difficult decisions with elderly patients, and going against the misguided belief that when it comes to health care, more is always better.

小题1:Why do doctors recommend routine cancer screening for elderly people?

A.It is believed to contribute to long life.

B.It is part of their health care package.

C.The elderly are more sensitive about their health.

D.The elderly are in greater danger of tumor growth.小题2:How do some researchers now look at routine cancer screening for the elderly?

A.It adds too much to their medical bills.

B.It helps increase their life expectancy.

C.They are doubtful about necessity.

D.They think it does more than good.小题3:What is the conventional view about women screening for breast cancer?

A.It applies to women over 50.

B.It is a must for adult women.

C.It is optional for young women.

D.It doesn’t apply to women over 74.小题4:Why do many doctors prescribe routine screening for cancer?

A.They want to protect themselves against medical disputes.

B.They want to take advantage of the medical care system.

C.They want data for medical research.

D.They want their patients to suffer less.小题5:What does the author say is the general view about health care?

A.The more, the better.

B.Prevention is better than cure.

C.Better early than late.

D.Better care, longer life.

题型:单项选择题

常用的音乐合成技术有()两种方式。

A.FM(调频)和Wave Table(波表)

B.FM(调频)和AM(调幅)

C.AM(调幅)和Wave Table(波表)

D.FM(调频)和功率放大

题型:单项选择题

影响药物稳定性的环境因素不包括()。

A.温度

B.pH值

C.光线

D.空气中的氧

E.包装材料

题型:单项选择题

国家环境保护机构必须就学校教室释放出的石棉纤维对学生健康直接构成危害的问题采取行动。由于不可能关闭学校教室建筑,因此,最好的办法是发出强令:不论教室是否正在使用都要将发现含有石棉的所有教室中的石棉立即清除干净。
下面哪一项,如果为真,最能为国家环境保护机构不实施上述建议提供强有力的理由

A.用于清除石棉的技术常常导致空中漂浮的石棉纤维含量水平的提高。
B.学校这种场所是石棉纤维最可能由于室内人员的活动而被释放到空中去的地方。
C.和成年人比起来,暴露在石棉纤维中的孩子得癌症的可能性更高。
D.清除石棉的成本每个学校都各不相同,其成本取决于要清除的石棉的难易程度和数量。
E.对是否或什么时候含有石棉的建筑材料将分解并释放到空中去的问题不可能有明确的断定。

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