(1)滑块落地时速度的大小; (2)弹簧释放的弹性势能。

题型:问答题

问题:

(1)滑块落地时速度的大小;

(2)弹簧释放的弹性势能。

考点:功能关系
题型:问答题

粗细均匀的铜导线电阻为R,若把它截为长度相同的两段,每段的电阻为R1,则R1       R;若把它对折拧成一条使用,其电阻为R2,则R2       R.(选填“<”、“>”或“=”)

题型:问答题

Proof reading:(10 处错误,每处1 分,满分10 分)

A new countryside will appearance in China a couple of years away. There will be more new farms with a certain basic knowledge of science or technology, laws and management. By then much farming techniques will have been modernized. With the help of scientists, farmers would use the latest technologies to promote agriculture without harm the environment. As a result, the yearly income of the farmers will get raising and the housing conditions will be improved as well. People will enjoy a clean, tidy and an orderly environment. Besides, the government will provide free compulsory(强制的) educate for rural kids and perfect medical care system farmers.

题型:问答题

社区获得性肺炎,最常见的致病菌是()

A.肺炎链球菌

B.金黄色葡萄球菌

C.革兰阴性杆菌

D.厌氧菌

E.真菌

题型:问答题

事业单位工作人员在本单位连续工作满10年且距法定退休年龄不足()年,提出订立聘用至退休的合同的,事业单位应当与其订立聘用至退休的合同.

A、10

B、15

C、5

D、3

题型:问答题

认知行为矫正技术包括()

A.任务分级法

B.改变消极观点

C.诱发不相容情感

D.基础意象法

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