一质量为m的物体静止放在光滑的水平面上,今以恒力F沿水平方向推该物体,在相同的时

题型:选择题

问题:

一质量为m的物体静止放在光滑的水平面上,今以恒力F沿水平方向推该物体,在相同的时间间隔内(  )

A.物体的位移相等

B.F对物体做的功相等

C.物体动能的变化量相等

D.物体动量的变化量相等

考点:匀变速直线运动的速度与时间的关系牛顿第二定律
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An Indian anthropologist, Chandra Thapar, made a study of foreign cultures, which had customs similar to (91) of his native land. One culture in (92) fascinated him because it reveres one animal (93) sacred, much as the people in India (94) the cow. The things he discovered might interest you (95) you will be studying India as part of this course.
The tribe Dr. Thapar (96) is called the Asu and is found on the American continent north of the Tamhumara of Mexico. Though it seems to be a (97) developed society of its type, it has an overwhelming (98) with the care and feeding of the rac—an animal much like a bull in size, strength and temperament. In the Asu tribe, it is almost a social (99) to own at least one (100) not more rats. People not possessing at least one are (101) in low esteem by the community because they are too poor to (102) one of these beasts properly. Some members of the tribe, to (103) their wealth and social prestige, even own (104) of racs.
(105) the rac breed is not very healthy and usually does not live more than five to seven years. Each family invests large (106) of money each year to keep its rac healthy and shod, for it has a tendency to throw its shoes often. There are rac (107) in each community, perhaps more than one if the community is particularly (108) . These specialists, however, due to the long period of ritual training they must undergo and (109) the difficulty of obtaining the right selection of charms to treat the rac, demand (110) offerings whenever a family must treat an ailing rac.

A.dear

B.costly

C.over-priced

D.much

题型:选择题

把物质的量均为0.1mol的AlCl3、CuCl2和H2SO4溶于水制成100ml的混合溶液,用石墨做电极电解,并收集两电极所产生的气体,一段时间后在两极收集到的气体在相同条件下体积相同。则下列描述正确的是: [ ]

A.电路中共转移0.9mol电子

B.阳极得到的气体中有O2,且其物质的量为0.35mol

C.阴极质量增加3.2g

D.铝元素以Al(OH)3的形式存在

题型:选择题

()年,美国《证券法》要求基金募集时必须发布招募说明书,对基金进行描述。

A.1933

B.1987

C.2003

D.1998

题型:选择题

某1型糖尿病患者,使用速效胰岛素治疗,近来上感后并发肺炎,出现食欲明显减退、发热及呕吐,除抗生素治疗外。对糖尿病本身的治疗应

A.停用胰岛素

B.增加速效胰岛素用量

C.改用长效胰岛素

D.改用磺脲类药物

E.改用双胍类药物

题型:选择题

生料中Al2O3主要来自粉煤灰;

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