更多“(113~117题共用题干) 患者,女,64岁。急性上呼吸道”相关的问题
正项级数 a n,判定 (a n+1)/a n=q<1是此正项级数收敛的什么条件()?
A.充分条件,但非必要条件 B.必要条件,但非充分条件 C.充分必要条件 D.既非充分条件,又非必要条件
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下列天体坐标受地球自转影响的是()。
A . A.赤经
B . B.赤纬
C . C.共轭赤经
D . D.时角
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从逻辑上讲,任何真正的问题都是在一定的()之下提出的。
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一般超载潜力较大,砌筑技术容易掌握,便于群众修建的一种涵洞形式是( )。 A.圆管涵 B.拱涵 C.盖板涵 D.箱涵
A.圆管涵
B.拱涵
C.盖板涵
D.箱涵
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下列属于债务收入的主要有( )。
A.国家对内发行公债取得的收入 B.向外国政府借款取得的收入 C.国家机关购买有价证券兑现的利息收入 D.向国际组织借款取得的收入
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监测时间内,迎宾位空岗()分钟视为无人值守。
A.2分钟
B.3分钟
C.5分钟
D.10分钟
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农户贷款业务作业监督岗实行区域轮换制,轮换周期为2年,最长不超过3年。
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道岔号数愈大,其辙叉角愈大,导曲线半径愈大,容许的侧向过岔速度也愈大。
A . 正确
B . 错误
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当工程网络计划中某项工作的实际进度偏差影响到总工期,必须通过缩短某些工作的持续时间调整进度计划时,这些工作是指()的可被压缩的工作。
A.关键线路和超过计划工期的非关键线路上
B.关键线路上资源消耗量比较少
C.关键线路上持续时间比较长
D.施工艺及采用技术比较简单
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()均属于特种用途车。
A.家畜车、毒品车、长大货物车 B.试验车、检衡车、除雪车 C.检衡车、平车、救援车 D.水泥车、毒品车、检衡车
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横梁中心应与游梁中心一致,其偏差应小于()。
A . 5mm
B . 3mm
C . 1.5mm
D . 0.5mm
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Being a man has always been dangerous. There are about 105 males born for every 100 females, but this ratio drops to near balance at the age of maturity, and among 70-year-olds there are twice as many women as men. But the great universal of male mortality is being changed. Now, by babies survive almost as well as girls do. This means that, for the first time, there will be an excess of boys in those crucial years when they are searching for a mate. More important, another chance for natural selection has been removed. Fifty years ago, the chance of a baby (particularly a boy baby) surviving depended on its weight. A kilogram too light or too heavy meant almost certain death. Today it makes almost no difference. Since much of the variation is due to genes one more agent of evolution has gone.There is another way to commit evolutionary suicide: stay alive, but have fewer children. Few people are as fertile as in the past. Except in some religious communities, very few women have 15 children. Nowadays the number of births, like the age of death, has become average. Most of us have roughly the same number of offspring. Again, differences between people and the opportunity for natural selection to take advantage of it have diminished. India shows what is happening. The country offers wealth for a few in the great cities and poverty for the remaining tribal peoples. The grand mediocrity of today everyone being the same in survival and number of offspring means that natural selection has lost 80% of its power in upper-middle-class India compared to the tribes.For us, this means that evolution is over; the biological Utopia has arrived. Strangely, it has involved little physical changes. No other species fills so many places in nature. But in the past 100,000 years even the past 100 years, our lives have been transformed but our bodies have not. We did not evolve, because machines and society did it for us. Darwin had a phrase to describe those ignorant of evolution—they "look at an organic being as average looks at a ship, as at something wholly beyond his comprehension". No doubt we will remember a 20th century way of life beyond comprehension for its ugliness. But however amazed our descendants may be at how far from Utopia we were, they will look just like us.
A.Sex Ratio Changes in Human Evolution.B.Ways of Continuing Man"s Evolution.C.The Evolutionary Future of Nature.D.Human Evolution Going Nowhere.
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文字是( ),是最重要的( )。人类有了文字,就突破了语言在( )上的限制,扩大了语言的( )。
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肱骨干中下1/3骨折合并桡神经损伤,最常采用的手术入路是()
A.前外侧入路
B.外侧入路
C.后侧入路
D.前内侧入路
E.后外侧入路
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下列属于财务效益预测与评估的静态分析法指标有()。
A、投资利润率
B、净现值
C、贷款偿还期
D、财务内部收益率
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