题目内容
10岁儿童，发热伴左腿痛3天，此前一周曾有咽炎，按扁桃体炎治疗，咽痛好转，查体：体温39℃，左股骨下端肿胀，皮温高，并有深压痛，血白细胞17×109/L，中性粒白细胞90%，血沉60mm/h。 下列哪一种是最可能的诊断
查看答案
搜索结果不匹配？点我反馈
更多问题
Passage 2 The more time scientists spend designing computers, the more they marvel at the human brain. Tasks that stump the most advanced supercomputer--recognizing a face, reading a handwritten note--are child’s play for the 3-lb. organ. Most important, unlike any conventional computer, the brain can learn from its mistakes. Researchers have tried for years to program computers to imitate the brain’s abilities, but without success. Now a growing number of designers believe they have the answer: if a computer is to function more like a person and less like an over-grown calculator, it must be built more like a brain, which distributes information across a vast interconnected web of nerve cells, or neurons. Conventional computers function by following a chainlike sequence of detailed instructions. Although very fast, their processors can perform only one task at a time. This approach works best in solving problems that can be broken down into simpler logical pieces. The processors in a neural-network computer, by contrast, form a grid much like the nerve cells in the brain. Since these artificial neurons are interconnected, they can share information and perform tasks at the same time. This two-dimensional approach works best at recognizing patterns. Instead of programming a neural-network computer to make decisions, its maker trains it to recognize the patterns in any solution to a problem by repeatedly feeding examples to the machine. This process is like a process that prepares all possible moves in a chess game and try to find a best approach to it. If the examples are not sufficient or complete, the computer will be in for trouble, after all, it can not respond to something it can not recognize as a pattern in its memory. Neural networks come in all shapes and size. The new networks will make things which were simply impossible completely feasible in the near future. What the users need to do is to wait and see. Developers are experimenting with new equipment and hopefully they will succeed. Until now most existed as software simulations because redesigning computer chips took a lot of time and money. By experimenting with different approaches through software rather than hardware, scientists have been able to avoid costly mistakes. What does the word "stump" in paragraph 1, line 2, mean
It may be the last book you’ll ever buy. And certainly, from a (21) standpoint, it will be the only book you’ll ever need. No, it’s not the Bible or some New Age tome (22) enlightenment--although it would let you carry (23) both texts simultaneously. It’s an electronic book--a (24) volume that could contain a library of information or, if your tastes run (25) what’s current, every title on today’s bestseller (26) And when you’re (27) with those, you could refill it with new (28) Convenience is its main (29) and that means more than simple portability. Because the information is in electronic (30) , it can be easily manipulated. You could, for instance, make the type larger for easier reading. Or you could make notes in the (31) with a stylus your observations being (32) on tiny, removable flash-memory card in the spine. It is likely that electronic books will come pre-loaded with a (33) of titles. New titles could be made (34) through flash-memory cards, for example, internet will be the delivery method of choice. Imagine browsing an online bookstore like www. Amazon. com, corn and downloading a novel (35) your electronic book via the modem in its spine. (36) Moby Dick would take about a minute. You could download a few titles, so you’ll have a few good reads to choose from while you’re relaxing at the beach. If your first choice is not to your (37) , a new title becomes available (38) the push of a button. An electronic book will be (39) --around ＄ 200 for a basic read-only model to about ＄ 400 for one that would (40) your margin scribbles. Some hurdles remain, though, before you can take an electric book with you anywhere.
It may be the last book you’ll ever buy. And certainly, from a (21) standpoint, it will be the only book you’ll ever need. No, it’s not the Bible or some New Age tome (22) enlightenment--although it would let you carry (23) both texts simultaneously. It’s an electronic book--a (24) volume that could contain a library of information or, if your tastes run (25) what’s current, every title on today’s bestseller (26) And when you’re (27) with those, you could refill it with new (28) Convenience is its main (29) and that means more than simple portability. Because the information is in electronic (30) , it can be easily manipulated. You could, for instance, make the type larger for easier reading. Or you could make notes in the (31) with a stylus your observations being (32) on tiny, removable flash-memory card in the spine. It is likely that electronic books will come pre-loaded with a (33) of titles. New titles could be made (34) through flash-memory cards, for example, internet will be the delivery method of choice. Imagine browsing an online bookstore like www. Amazon. com, corn and downloading a novel (35) your electronic book via the modem in its spine. (36) Moby Dick would take about a minute. You could download a few titles, so you’ll have a few good reads to choose from while you’re relaxing at the beach. If your first choice is not to your (37) , a new title becomes available (38) the push of a button. An electronic book will be (39) --around ＄ 200 for a basic read-only model to about ＄ 400 for one that would (40) your margin scribbles. Some hurdles remain, though, before you can take an electric book with you anywhere.
某施工单位承包了高级公路K25+100～K30+50段的路面施工工程，路基宽为20 m，设计行车时速为100 km/h，公路全长30 km，路面结构为：路面底基层为级配啐石30 cm，20 cm石灰稳定碎石土基层，25 cm沥青混合料面层，施工单位在施工过程中严格按设计要求和操作规程开展施工，在沥青混凝土路面施工前制定了详细的施工安全要点，现摘录部分如下： ①摊铺机卸料时，熨平装置的端头与路缘石应有一定间距，以免发生碰撞； ②人工装卸桶装沥青时，运输车应停在有坡度地段，方便装卸； ③用柴油清洗摊铺机时．不许接近明火； ④采用切缝机切缝前应先打开冷却水，冷却水中断时．应停止切缝。施工单位在沥青混凝土的施工过程中，对其施工内容做了符合规范要求的检验， 根据以上材料 回答下列问题 场景中该路段面层养生结束时，其弯拉强度至少应达到( )后，行人方可通行。
微信支付 
支付宝支付