2020年考研：黑龙江考研数学参考书推荐

发布时间：2019-07-27

对于考研数学，黑龙江考生应该如何备考，考研数学如何选择参考书，除了课本，哪些习题是必要的，哪些书比较好用?小编带大家来看一下2019年热荐考研数学参考书：

1.     数学一 辅导书

     

2.     数学二 辅导书

     

3.     数学三 辅导书
  


（推荐率=该书的推荐次数/每本书推荐次数总和)

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下面小编为大家准备了 研究生入学 的相关考题，供大家学习参考。
1991-24.我国最早记载制成乌头碱结晶的文献是
A.《本草纲目》B.《本草蒙荃》 C.《炮制大法》 D.《白猿经》 E.《本草备要》

答案：D
解析：
D。《內猿经》记载了用新鲜乌头榨汁、日晒、烟薰，则“药面上结成冰”，“冰”即结晶，也就是乌头碱的结晶。比起19世纪欧洲人从鸦片中提出吗啡——号称世界第一种生物碱还要早100多年。
Amazon is cutting hundreds of jobs at its Seattle headquarters in a rare set of layoffs for the online etailing giant,according to a media report The company will 1 cut hundreds more jobs in other parts of Amazon's operations,The Seattle Times reported on Monday,2 a person familiar with the eliminations An Amazon spokesman told Fortune that as part of our annual planning process,we are 3 head count adjustments across the company-4 reductions in a couple of places and aggressive hiring in many others 5 the Times,the Amazon layoffs are the result of the quick 6 of late that saw it end up with too much staff in some units.The paper also said managers are under pressure to 7 lower caliber employees and show more spending discipline.Amazon has a problem right now with 8 one un named engineer told the Times The layoffs are mostly 9 in Amazons consumer retail businesses,the Times reported.The move 10 recent layoffs at Amazon's e-commerce arch-rival Walmart.Walmart is in the process of cutting up to 500 or so jobs at its Bentonville,Arkansas headquarters 11 it looks to streamline its operations and be as nimble as it can to 12 with Amazon.For both companies,the cuts are modest in relation 13 staffing levels.Amazon employs about 566,000 people worldwide,according to its recently 14 annual report for 2017.That was up from 341,400 a year earlier.（15 its organic growth,Amazon has made some acquisitions in the last year,notably that of Whole Foods Market last summer.）Such has Amazons growth been that it is currently in the process of 16 locations for a second headquarters Earlier this month,Amazon reported 17 of 60.5 billion for the three months ended Dec.31.18 from$43.74 billilion a year earlier,fueleded by 19 sales during the holiday season It also reported a profit of 1.9 billion on the 20 of the popularity of its voice-activated Echo devices and jump in its Prime memberships.
2选？

A.suspecting
B.diffusing
C.citing
D.observing
答案：C
解析：
语义辨析题。空格所在句子指出,《西雅图时报》本周一报道,据了解此次裁员内情的人称,亚马逊还将继续从其他业务部门裁员数百人。根据题意应选[C]citing,意为“引用,引证”。[A]suspecting“怀疑”不符合上下文意思;[B]diffusing“扩散,传播”,上下文并无证据说明此人想要广泛散播此消息,故排除;[D]observing“观察”不符合上下文意思。
学习动机

答案：
解析：
动机是引起和维持个体活动，使活动趋向一定的目标，以满足某种需要的一种内部心理状态。学习动机是动机在学习活动中的表现：学习动机是引起和维持个体进行学习活动，并使活动朝向一定的学习目标，以满足某种学习需要的内部心理状态．它的主要内容包括知识价值观、学习兴趣、学习效能感和成败归因。
诊断原发性肺脓肿最有意义的临床表现是
A.咯血 B.痰菌阳性
C.咳大量脓臭痰 D.畏寒、发热

答案：C
解析：
[考点]肺脓肿的特点 [分析]肺脓肿是由于多种病原菌引起的 肺部化脓感染，临床特征为高热、咳嗽、咳 大量脓臭痰。咳大量脓臭痰是其主要特点。

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