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5岁以下幼儿最常见的气管和支气管异物类型多为
A.植物性:如花生、瓜子、豆类等
B.矿物性:如铁针、铁钉、小钢球等
C.化学制品:如塑料笔帽、橡皮、义齿等
D.动物性:如鱼刺、骨片等
E.以上都不是
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与串联重复的微卫星序列多态标记相比,SNP具有的特征是( )
A.具有更高的遗传不稳定性 B.不需要进行扩增片段长度的测量 C.在基因组中的分布密度比微卫星标记低 D.具有更高的遗传稳定性 E.在基因组中的分布密度比微卫星标记高
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Meta分析中异质性检验的目的是检验各个独立研究结果的
A.真实性
B.同质性
C.代表性
D.敏感性
E.可靠性
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利福平是结核病化疗的基石,但利福平也偶可引起严重的副反应,下面不是利福平的副反应的是()。
A.急性间质性肾炎
B.急性或亚急性肝坏死
C.类流感综合征
D.癫痫样发作
E.血液学改变,包括溶血性贫血等
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下列哪些情形下行政机关应注销行政许可?()
A、因不可抗力导致许可无法实施的B、赋予公民特定资格的行政许可,该公民死亡或丧失行为能力的C、法人或者其他组织终止的D、许可被依法撤销、撤回或者吊销的
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病例对照研究在研究病因时主要缺点有( ) A.回忆偏倚大 B.难以得到符合要求的对照 C.统计处理复杂 D.时
病例对照研究在研究病因时主要缺点有( ) A.回忆偏倚大 B.难以得到符合要求的对照 C.统计处理复杂 D.时间顺序有时不清 E.一次只能研究有限的几个因素
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你们公司的项目按时完成率低得可怜。情况如此糟糕,公司中的某个人正在将项目失败的故事寄到有名的项目管理刊物。你们的项目管理办公室(PMO)主任的照片已数次出现在这些令人尴尬的文章中,而他也已经完全失望地认为,组织中的任何人都无法找出项目完成率低的原因。因此,他雇用了一位咨询师来查明究竟是什么方面出了问题。在查阅应吸取的教训资料以确定这些失败的根本原因时,咨询师应该查看以下所有的信息,除了:()
A.新的或已修订的活动工期预算 B.修改过的活动顺序 C.备用进度方案的分析 D.进度更新
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Genghis Khan was not one to agonize over gender roles. He was into sex and power, and he didn’t mind saying so. "The greatest joy a man can know is to conquer his enemies and drive them before him." The emperor once thundered. Genghis Khan conquered two thirds of the known world during the early 13th century and he may have set an all-time record for what biologists call reproductive success. An account written 33 years after his death credited him with 20,000 descendants. Men’s manners have improved markedly since Genghis Khan’s day. At heart, though, we’re the same animals we were 800 years ago, which is to say we are status seekers. We may talk of equality and fraternity. We may strive for classless societies. But we go right on building hierarchies, and jockeying for status within them. Can we abandon the tendency Probably not. As scientists are now discovering, status seeking is not just a habit or a cultural tradition. It’s a design feature of the male psyche--a biological drive that is rooted in the nervous system and regulated by hormones and brain chemicals. How do we know this relentless one-upmanship is a biological endowment Anthropologists find the same pattern virtually everywhere they 10ok and so do zoologists. Male competition is fierce among crickets, crayfish and elephants, and it’s ubiquitous among higher primates, for example, male chimpanzees have an extraordinarily strong drive for dominance. Coincidence Evolutionists don’t think so. From their perspective, life is essentially a race to repro-duke, and natural selection is bound to favor different strategies in different organisms. In reproductive terms, they have vastly more to gain from it. A female can’t flood the gene pool by commandeering extra mates; no matter how much sperm she attracts, she is unlikely to produce more than a dozen viable offspring. But as Genghis Khan’s exploits make clear, males can profit enormously by out mating their peers. It’s not hard to see how that dynamic, played out over millions of years, would leave modern men fretting over status. We’re built from the genes that the most determined competitors passed down. Fortunately, we don’t aspire to families of 800. As monogamy and contraceptives may have leveled the reproductive playfield, power has become its own psychological reward. Those who achieve high status still enjoy more sex with more partners than the rest of us, and the reason is no mystery. Researchers have consistently found that women favor signs of "earning capacity" over good looks. For sheer sex appeal, a doughy (脸色苍白的) bald guy in a Rolex will outscore a stud (非常英俊的男子) in a Burger King uniform almost every time.
A.the biological differences of organisms.B.the availability of large number of females.C.the mating patterns of females.D.the natural desire to produce offspring.
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抓好2016年组织收入工作的要求有()
A . 客观地定
B . 合理地调
C . 科学地分
D . 准确地考
E . 精准地定
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把企业分为国有企业、集体所有制企业、股份制企业、民营企业,是按照( )划分的
A.投资主体
B.产权组织形式
C.实体集约程度
D.企业规模
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实验动物学科的动物实验方面实验动物作为研究的()。
A.材料或模型
B.内容
C.目的
D.方法
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管理和监控工具的功能是对工作流管理系统中流程实例的状态进行监控与管理,包括()、资源控制等。
A.信息管理B.用户管理C.成员管理D.角色管理
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运动员在比赛间歇时,应将()。
A . 球拍留在比赛球台上
B . 自己带走保管,不管裁判是否答应
C . 得到裁判员的特殊许可的可以带走自己的乒乓球拍
D . 随便怎样,由运动员自己决定
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