单晶体塑性变形的主要机制有哪些?其机理分别是什么?

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问题:

单晶体塑性变形的主要机制有哪些?其机理分别是什么?

考点:轮机工程金属的塑性变形和再结晶金属的塑性变形和再结晶题库
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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.

7()

A.contaminated

B.contained

C.sustained

D.maintained

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沈欣、熊健、常程、张博四位同学去郊外郊游,看见一农家院子里有如图所示化肥商标,几位同学比赛计算化肥样品中硝酸铵(NH4NO3)的纯度(杂质不含氮元素),他们计算的结果分别如下,其中正确的是(  )

硝酸铵

净重:50kg

含氮量:34.3%

××化学工业公司

A.98%

B.35%

C.34.5%

D.89%

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某油库工人许某,在上班进行输油作业过程中擅离职守,离开作业现场。储油罐装满后,汽油外溢,库区地面漂流大量汽油,空气中也形成大量可燃气体,因遇输电线火星;发生严重火灾,整个油库成为一片火海,给国家造成巨大经济损失,许某的行为构成:( )

A.失火罪

B.重大责任事故罪

C.玩忽职守罪

D.危险品肇事罪

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桑菊饮适用于哪型鼻衄:

A.腹大胀满,按之如囊裹水
B.腹大胀满,脉络怒张
C.腹大胀满不舒,早宽暮急
D.腹大胀满,舌红绛少津
E.腹大胀满,脘腹撑急

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为指导网点规范、统一布置网点环境,提升专业服务形象,上级行应选择哪种支撑工具()

A.《指导建议书》

B.《例会建议书》

C.《日程建议书》

D.《有形展示建议书》

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