讨论百分表时,技师甲说百分表常用来测齿轮的齿侧间隙;技师乙说用来测输出轴的圆跳动。谁

题型:单项选择题

问题:

讨论百分表时,技师甲说百分表常用来测齿轮的齿侧间隙;技师乙说用来测输出轴的圆跳动。谁正确?()

A、甲正确;

B、乙正确;

C、两人均正确;

D、两人均不正确。

考点:机械工程自动变速器自动变速器题库
题型:单项选择题

分类随机储存兼具分类储存及随机储存的特色,需要的储存空间()

A.与分类储存相同

B.大于分类储存

C.小于随机储存

D.介于两者之间

题型:单项选择题

股骨头后脱位,首选的侧位摄影体位是()

A.蛙式位

B.谢氏位

C.侧卧侧位

D.仰卧水平侧位

E.俯卧水平侧位

题型:单项选择题

等物质的量的乙醇、乙烷、乙炔(C2H2)完全燃烧消耗的氧气的物质的量之比为[ ]

A.6∶7∶5  

B.1∶1∶1  

C.35∶30∶42  

D.3∶5∶4

题型:单项选择题

Americans’ (1) impulses keep generating surprises. Charitable giving plays an even larger role in the (2) . Demand for nonprofit services gets proportionately bigger as a locality’s (3) rises. The philanthropy of the wealthy may not hinge on tax (4) to the degree many believe. The US (5) the world in levels of charitable activity. Some experts see charity as a (6) trait of the US, more than (7) or business. But those forces may be (8) , as many nonprofits, from healthcare to classical music are selling (9) in a marketplace alongside for-profit (10) . Charity is no mere (11) activity. It pays off for society in ways that may (12) the rates of return on many traditional investments. Charity not only helps those on the (13) end but also strengthens the (14) of society at large. Moreover, it appears to make the givers themselves more (15) . The pattern that conservatives are better givers than (16) is less about politics than about charity-linked (17) most common to conservatives, religious commitment, marriage and children, and entrepreneurship. The main point is that more Americans, regardless of ideology, embrace giving as a tool for (18) . The urge to make a difference, and to take (19) in it, outweighs (20) considerations.

题型:单项选择题

2002年11月,中国广州出现一种以近距离飞沫或接触传播为主的严重呼吸窘迫综合征,后经世界卫生组织专家命名为SARS,截止2003年5月30日,该疾病共波及32个国家,8000余人发病。根据该疾病的流行特点,此次SARS的流行强度可定性为()

A.散发

B.暴发

C.大暴发

D.流行

E.大流行

更多题库