在正常市场条件下,下列资产负债匹配方式中,流动性风险最低的是( )。
赵明能够根据A>B,B>C,则A>C的原理,推出A.B.C的关系。根据皮亚杰的认知发展理论,赵明的认知发展处于( )阶段
在正常市场条件下,下列资产负债匹配方式中,流动性风险最低的是( )。
海因里希事故法则提出无伤害事故、轻伤事故、死亡及重伤事故之间的比例 为300:29:1。下列关于海因里希事故法则应用的说法,正确的是( )。
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 risk may lonely people run according to the first paragraph?
患者,男,30岁。便干,便后出血并疼痛1周。检查:肛门外观可见截石位6点有一梭形裂口通向肛内,创面不深,边缘整齐,其分类应是( )
内痔
外痔
肛窦炎
早期肛裂
陈旧性肛裂
患者,男,75岁。站位疝内容物可突出并下降至阴囊处,平卧后回纳疝块并压迫内环,嘱患者咳嗽疝块不再出现。诊断应考虑为( )
嵌顿性疝
股疝
绞窄性疝
腹股沟斜疝
腹股沟直疝