设收敛,则下列级数中收敛的为( )

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问题:

设收敛,则下列级数中收敛的为( )

考点:自学考试高等数学高等数学(工本)
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( )在本企业的科技开发活动中,起着主导和牵头作用,具有权威性,处于核心和中心地位。

A.内企业家

B.技术创新小组

C.新事业发展部

D.企业技术中心

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原发性高血压患者肾功能受损的最先表现是()

A.尿比重固定为1.010

B.夜尿增多

C.尿蛋白(++)

D.尿少量红细胞

E.血尿素氮升高

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What’s your earliest childhood memory Can you remember learning to walk Or talk The first time you heard thunder or watched a television program Adults seldom (1) events much earlier than the year or so before entering school, (2) children younger than three or four (3) retain any specific, personal experiences.

A variety of explanations have been (4) by psychologists for this "childhood amnesia". One argues that the hippo-campus, the region of the brain which is (5) for forming memories, does not mature until about the age of two. But the most popular theory (6) that, since adults don’t think like children, they cannot (7) childhood memories. Adults think in words, and their life memories are like stories or (8) one event follows (9) as in a novel or film. But when they search through their mental (10) for early childhood memories to add to this verbal life story, they don’t find any that fit the (11) It’s like trying to find a Chinese word in an English dictionary.

Now psychologist Annette Simms of the New York State University offers a new (12) for childhood amnesia. She argues that there simply aren’t any early childhood memories to (13) . According to Dr. Simms, children need to learn to use someone else’s spoken description of their personal (14) in order to turn their own short-term, quickly forgotten (15) of them into long term memories. In other (16) , children have to talk about their experiences and hear others talk about (17) — Mother talking about the afternoon (18) looking for seashells at the beach or Dad asking them about their day at Ocean Park. Without this (19) reinforcement, says Dr. Simms, children cannot form (20) memories of their personal experiences.

7()

A.reflect

B.attain

C.access

D.acquire

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病历摘要女性,61岁。黏液血便、乏力、消瘦4个月。患者4个月前开始出现大便带血及黏液,并有大便次数增多、伴里急后重及便不尽的感觉。继而出现粪便带血及黏液。患病以来,自感全身乏力,食欲减退。体重减轻近5千克。无腹痛,无恶心、呕吐,无发热。查体:T36.8℃,P85次/分,R18次/分,BP120/80mmHg,睑结膜苍白,心肺未见异常。腹部平软,肝脾未触及,未触及包块,肠鸣音正常。直肠指诊:距肛门4cm,直肠左侧可触及质硬肿物,指套染血。肛门镜检:仅进入4cm,可见菜花样肿物,表面糜烂。实验室检查:血WBC6.9×109/L,RBC3.17×1012/L,Hb87g/L。要求:根据以上病历摘要,请写出初步诊断及诊断依据、鉴别诊断、进一步检查与治疗原则。

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美国学者周锡瑞指出,辛亥革命后,“任官举职,权柄恒不自上。往往司长所辟除者,地方人民辄投函或径渴司长,要求更易,甚至已易数人不能决”。这种现象反映了辛亥革命后()

A.民国政府行政效率较低下

B.民众民主共和意识得到提高

C.公众对政治生活关注增强

D.地方政府争权夺利斗争激烈

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