行业壁垒是指新企业在进入该行业时所遇到的有利因素。（  ）

填充后浇带，采用的微膨胀混凝土强度等级比原结构强度提高一级，混凝土养护时间不得少于(　　)天。

评价是一个确定实际发生的行为变化的程度的过程。评价过程实质上是一个确定课程与教学计划实际达到教育目标的程度的过程。”这句话反映的是（    ）。

完全性脑卒中发病后达到最高峰的时间一般是

某企业2018年第一季度产品生产量预算为1500件，单位产品材料用量5千克／件，年初材料库存量1000千克，第一季度还要根据第二季度生产耗用材料的10％安排季末存量，预计第二季度生产耗用7800千克材料。材料采购价格预计12元／千克，年初应付账款为30000元，企业各季度采购金额中60％当季度付现，40％下季度付现，则该企业第一季度材料现金支出金额为（）。

Passage1

   Lonely people, it seems, are at greater riskthan the gregarious of developing illnesses associated with chronicinflammation, such as heart disease and certain cancers. A paper published lastyear in the Public Library of Science, Medicine, shows the effect on mortalityof loneliness   is comparable with thatof smoking and drinking after examining the results of 148 previous studies andcontrolled for factors such as age and pre-existing illness.

Steven Cole of the University ofCalifornia, Los Angeles, thinks he may know why this is so. He told theAmerican Association for the Advancement of Science meeting in Washington,D.C., about his work studying the expression of genes in lonely people. Dr.Cole harvested samples of white blood cells from both lonely and gregariouspeople. He then analysed the activity of their genes, as measured by theproduction of a substance called messenger RNA. This molecule carries    instructions from the genes telling a cellwhich proteins to make. The level of messenger RNA from most genes was the samein both types of people. There were several dozen genes, however, that wereless active m the lonely, and several dozen others that were more active.Moreover, both the     less active andthe more active gene types came from a small number of functional groups.

   Broadly speaking, the genes less active in thelonely were those involved in staving off viral infections. Those that weremore active were involved in protecting against bacteria. Dr. Cole suspectsthis could help explain not only why the lonely are iller, but how, inevolutionary terms, this odd state of affairs has come about.

    The crucial bit ofthe puzzle is that viruses have to be caught from another infected individual andthey are usually species-specific. Bacteria, in contrast, often just lurk inthe environment, and  may thrive on manyhosts. The gregarious are therefore at greater risk than the lonely ofcatching  viruses, and Dr. Cole thussuggests that past evolution has created a mechanism which causes white cellsto respond appropriately. Conversely, the lonely are better off ramping uptheir protection  against bacterialinfection, which is a bigger relative risk to them.

     What Dr. Cole seemsto have revealed, then, is a mechanism by which social environment reachesinside a person's body and tweaks its genome so that it responds appropriately.It is not that the lonely and the gregarious are genetically different fromeach other. Rather, their genes are regulated differently, according to howsociable an individual is. Dr. Cole thinks this regulation is part of a widermechanism that tunes individuals to the circumstances they find themselves in.

What message does Dr. Cole seem to convey by the mechanism?

以上选项中，属于奇穴特性的是(     )

某临床研究需要用到患者的穿刺样本，临床设立了研究用的知情同意书，由穿刺研究医师负责告知患者。在穿刺前该医师认为该研究不会对患者造成额外伤害，故未告知患者其穿刺样本可能用于临床研究，将临床研究知情同意书与其他体检单给患者一同签字。该医师违反的原则是（    ）。

某男，患咳喘病多年，近2个月来咳嗽气短，痰涎清稀，反复感冒，自汗畏风。查体：背部双下肺可闻及湿性啰音，其诊断是（   ）。

（  ）是基金托管人为基金提供托管服务而向基金收取的费用。

男性，60岁，慢性支气管炎、阻塞性肺气肿病史10余年，近3年来反复双下肢浮肿，3天前因受凉病情加剧，口唇发绀、神志恍惚。确定有无呼吸衰竭，最有意义的检查是