硼10俘获1个α粒子,生成氮13,放出x粒子,而氮13是不稳定的,它放出y粒子变

题型:不定项选择

问题:

硼10俘获1个α粒子,生成氮13,放出x粒子,而氮13是不稳定的,它放出y粒子变成碳13,那么x粒子和y,粒子分别为 [ ]

A.中子和正电子

B.中子和电子

C.质子和正电子

D.质子和中子

考点:核反应
题型:不定项选择

一代通儒顾炎武

顾炎武从科举制度桎梏中挣脱出来后,便一改旧习,自警“能人不为文人,能讲不为讲师”力倡“君子之为学,以明道也,以救世也”,为了一抒山河壮怀、广交天下贤哲,也为了摆脱纠缠。躲避豪绅叶方恒的陷害,他以游为隐,将家事稍作安排,便只身出游。最初往来于山东、北京、江苏、浙江之间,自康熙元年起,其游踪扩至河北、河南、山西、陕西。以友人所赠二马二骡载书自随,南北往返,风尘仆仆,行万里路,读万卷书,把自己的后半生献给了著述事业。顾炎武每到一处,必考察当地风土人情、山川地理,如与平日所闻不符,便打开书卷验证。旅途中则在鞍上默诵诸经注疏,偶有遗忘,就翻书温习。据他在《书(为顾宁人征天下书籍启)后》回忆,自己曾临泰山,谒十三陵,登恒山,抵太原,“往来曲折二三万里,所览书又得万余卷”。他把所搜集到的地理文献资料一分为二,将有关水利、贡赋、经济、军事部分,编为《天下郡国利病书》,有关地理沿革、建制、山川、名胜部分,则编为《肇城志》。

顾炎武把《论语》中的“博学于文”“行己有耻”作为自己的治学宗旨和处世之道,虚怀若谷,严于律己,注重友情。在他看来,为学不日进则日退,独学无友则孤陋难成。交友是益学进道的重要途径,古人学有所得,未尝不求同志之人,所以,寻友交友构成他为学生涯的重要组成部分。在为学交友过程中,他始终推友之长,虚心己待人,以友为师,其高尚品格足为后世楷模。他晚年所撰《广师》,从学术视野、学术贡献、博闻强记、文风雅正、治学态度等方面,对同时代的十位“同学之士”加以称许。其弟子潘未在《日知录》序中,盛赞其师足迹半天下,所至交其天下贤豪长者。天下无贤不肖,皆知先生为通儒。

顾炎武一生,始终关注“国家治乱之源,生民根本之计”,早年奔走国事,中年谋求匡复,即使暮年独居北方,依旧念念不忘“东土饥荒”“江南水旱”,直到逝世前,病魔缠身,他仍然以“救民水火”为己任。他主张,天生豪杰必有所任,“拯斯人于涂炭,为万世开太平”,正是自己的责任。顾炎武对国家民族前途命运的关注,有其特定的原因,今天看来固然有一定的局限性,但是对于一个旧时代的思想家和学者来说,却是难能可贵的。面对明清交替的现实,顾炎武从历史反思中得出结论:“保天下者,匹夫之贱与有责焉。”后世学者将他的这一思想归纳为“天下兴亡,匹夫有责”,成为我们中 * * 爱国主义传统的一个重要组成部分,是颇有道理的。

(摘编自陈祖武《顾炎武评传》

相关链接

①顾炎武(1613—1682),明清之际思想家、学者。初名绛,字宁人,学者称亭林先生。江苏昆山人。…..遍游华北,所至访问风俗,搜集材料,学问广博,于国家典制、郡邑掌故、天文仪象、河槽、兵农以及经史百家、音韵训诂之学,都有研究。晚年治经侧重考证,开清代朴学风气。反对空谈“心、理、性、命”,提倡“经世致用”的实际学问。著作有《日知录》《天下郡国利病书》《肇域志》《音学五书》《顾亭林诗文集》等。(摘自《辞海》第六版)

②我生平最敬慕亭林先生为人…深信他不但是经师,而且是人师。(梁启超《中国近三百年学术史》)。

梁启超生平最敬慕顾炎武的为人,认为他不但是经学大师,而且是世人楷模。这是为什么?请结合材料简要分析。

题型:不定项选择

防止古代壁画颜料褪、变色的主要因素是下列那一种?()

A、增加温度、湿度

B、减少空气中飘尘的影响

C、避免紫外光照射

D、使用高分子封护材料

题型:不定项选择

肺痨多发生于

A.经抗痨治疗无好转
B.咳嗽、咯血、胸痛、发热、消瘦等
C.经抗痨治疗有效
D.青壮年
E.40岁以上的中老年男性

题型:不定项选择

青海省湟源县境内日月山在唐代的称谓是什么?请列举与其有关的事迹。

题型:不定项选择

Passage Three

One of Microsoft’s cool people, is Patrick Blackburn. As a test manager for the Product Group, Blackburn’s job may sound routine; however, he says it’s anything but that.
"Most people ,think of software testing as a mundane task of punching the keyboard like a monkey, trying to break the program," Blackburn says. "Part of that is true, but we write software programs called Monkeys to do that for us so that we don’t have to hire real monkeys. Real monkeys are too difficult to manage and don’t usually pass the personal hygiene criteria !" In reality, Blackburn says, testing responsibilities are very technically challenging and often include complete development cycles of their own. He spends most of his time coming up with creative incentives to convince his team to believe in schedules for products that don’t yet exist, hiring great people to build p teams, and pounding on the products to find bugs before the customer sees them.
According to Blackburn, the most critical thing you can do to succeed at Microsoft is to focus on what you believe is important. "It’s easy to get overwhelmed with everything going on around you, so first and foremost you need to stay focused," he says. "What you focus on needs to be something you firmly believe in so that you’ll pursue it and defend your mission with a passion. "
He also thinks that one of the biggest differences between his co-workers at Microsoft and those at his former workplace is the sense of ownership and the impact on the business that everyone shares. "We hire people who tend to become personally attached to the products and the success of the company, and the environment really perpetuates this," Blackburn says. "It’s much easier to motivate a team at Microsoft than any other company I’ve been in. "
One of the most difficult parts of Blackburn’s job is staying ahead of the people who report to him. "Because there are so many smart people and technology is changing so quickly, it is a constant challenge to keep up," he says. "I hope that’s because I hire such great people!"
To succeed, Blackburn uses time management tactics and allocates a specific amount of time to education. "My personal goal is to spend at least 20 percent of my time learning new things through formal and informal methods. "

Blackburn keeps on learning new things mainly because ______ .

A.he has to keep up with new technology in order to lead his people better

B.he has to receive further education in order to get promotion to a higher position

C.he has to know more than other smart managers in order to make better reports

D.he has to learn time management tactics in order to transfer to management department

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