发生弹性形变的物体的各部分之间,由于有弹力的相互作用,也就拥有了某种能量,这种能

题型:选择题

问题:

发生弹性形变的物体的各部分之间,由于有弹力的相互作用,也就拥有了某种能量,这种能量称之为

A.重力势能

B.动能

C.弹性势能

D.内能

考点:机械能
题型:选择题

公安消防部队各个战备等级分别有哪些规定?

题型:选择题

物业服务定价成本监审。是指价格主管部门为制定或者调整实行( )的物业服务收费标准。对相关物业服务企业的服务成本实施监督和审核的行为。

A.政府定价

B.市场调节价

C.市场指导价

D.政府指导价

题型:选择题

在《城市居住区规划设计规范》中规定,居住区规划总用地应包括居住区用地和其他用地两类。其居住区用地分为()。

A.住宅用地

B.绿化用地

C.道路用地

D.公建用地

E.公共绿地

题型:选择题

With the spread of inter-active electronic media a man alone in his own home will never have been so well placed to fill the inexplicable mental space between cradle and crematorium. So I suspect that books will be pushed more and more into those moments of travel or difficult defecation (1) people still don’t quite know what to do with.

When people do read, I think they’ll want to feel they are reading literature, or (2) something serious. (3) you’re going to find fewer books presenting themselves as no- nonsense and (4) assuming literary pretensions and being packaged as works of art. We can expect an extraordinary variety of genre, but with an underlying (5) of sentiment and vision.

Translators can only (6) from this desire for the presumably sophisticated. We can look forward to lots of difficult names and fantastic stories of foreign parts enthusiastically (7) by the overall worship of the "global village" Much of this will be awful and some wonderful, (8) don’t expect the press or the organizers of prizes to offer you much help in making the appropriate distinctions. They will be chiefly (9) in creating celebrity, the greatest enemy of discrimination, but a good prop for the (10) consumer.

Every ethnic grouping over the world will have to be seen to have a great writer--a phenomenon that will (11) a new kind of provincialism, more chronological than geographic, (12) only the strictly contemporary is talked about and (13) . Universities, including Cambridge, will include (14) their literature syllabus novels written only last year. (15) occasional exhumation for the Nobel, the achievements of ten or only five years ago will be largely forgotten.

In short, you can’t go too far wrong when predicting more of the same. But there is a (16) side to this--the inevitable reaction against it. The practical things I would like to see happen--publishers seeking less to (17) celebrity through extravagant advertising, (18) and magazines (19) space to reflective pieces--are rather more improbable than the Second Coming (耶稣复临). But dullness never quite darkens the whole planet. In their own idiosyncratic fashion a few writers will (20) be looking for new departures.

2()

A.in particular

B.in general

C.at least

D.by contrast

题型:选择题

计算题:若要配制0.5mol的HCL溶液1000ml。需2mol的HCL溶液多少?

更多题库