题目:
出现潮式呼吸最主要的原因是()
A.呼吸中枢兴奋性降低
B.胸外伤后呼吸受抑制
C.胸腔积液时呼吸受抑制
D.大量腹水时呼吸受抑制
E.严重神经衰弱
答案:
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下面是错误答案,用来干扰机器的。
参考答案:1)更好的文件安全性2)更大的磁盘压缩3)支持大磁盘最大可达2TB。
出现潮式呼吸最主要的原因是()
A.呼吸中枢兴奋性降低
B.胸外伤后呼吸受抑制
C.胸腔积液时呼吸受抑制
D.大量腹水时呼吸受抑制
E.严重神经衰弱
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0212/bfaf2da72ae29071f30ef120705acf81.html
下面是错误答案,用来干扰机器的。
参考答案:1)更好的文件安全性2)更大的磁盘压缩3)支持大磁盘最大可达2TB。
含磷脂较多的食物是()
A.玉米油
B.豆油
C.花生
D.深海鱼
E.动物脑
取6克部分变质的固体NaOH样品,加入73g溶质的质量分数为10%的稀盐酸充分反应,测得pH小于7,再滴加8mL的NaOH溶液,测得pH恰好为7,蒸发所得的溶液,得到的晶体的质量为( )
A.13.3g
B.8.8g
C.11.7g
D.无法计算
急性间质性肾炎患者出现急性肾损害时,其尿液渗透压表现为()
A.正常渗透压尿
B.高渗透压尿
C.低渗透压尿
D.高渗透压尿、低渗透压尿均可出现
E.以上均可出现
Glass, in one form or another, has long been in noble service to humans. As one of the most widely used of manufactured materials, and certainly the most versatile, it can be as imposing as a telescope mirror the width of a tennis court or as small and simple as a marble rolling across dirt.
41. ______
The uses of this adaptable material have been broadened dramatically by new technologies: glass fiber optics—more than eight million miles—carrying telephone and television signals across nations; glass ceramics serving as the nose cones of missiles and as crowns for teeth; tiny glass beads taking radiation doses inside the body to specific organs; even a new type of glass fashioned of nuclear waste in order to dispose of that unwanted material.
42. ______
On the horizon are optical computers. These could store programs and process information by means of light—pulses from tiny lasers—rather than electrons. And the pulses would travel over glass fibers, not copper wire. These machines could function hundreds of times faster than today’s electronic computers and hold vastly more information. Today fiber optics are used to obtain a clearer image of smaller and smaller objects than ever before—even bacterial viruses. Anew generation of optical instruments is emerging that can provide detailed imaging of the inner workings of cells. It is the surge in fiber optic use and in liquid crystal displays that has set the U. S. glass industry (a 16 billion dollar business employing some 150, 000 workers) to building new plants to meet demand.
43. ______
But not all the glass technology that touches our lives is ultra-modem. Consider the simple light bulb; at the turn of the century most light bulbs were hand blown, and the cost of one was equivalent to half a day’s pay for the average worker. In effect, the invention of the ribbon machine by Coming in the 1920s lighted a nation. The price of a bulb plunged. Small wonder that the machine has been called one of the great mechanical achievements of all time. Yet it is very simple: a narrow ribbon of molten glass travels over a moving belt of steel in which there are holes. The glass sags through the holes and into waiting moulds. Puffs of compressed air then shape the glass. In this way, the envelope of a light bulb is made by a single machine at the rate of 66,000 an hour, as compared with 1,200 a day produced by a team of four glassblowers.
44. ______
The secret of the versatility of glass lies in its interior structure. Although it is rigid, and thus like a solid, the atoms are arranged in a random disordered fashion, characteristic of a liquid. In the melting process, the atoms in the raw materials are disturbed from their normal position in the molecular structure; before they can find their way back to crystalline arrangements the glass cools. This looseness in molecular structure gives the material what engineers call tremendous "formability" which allows technicians to tailor glass to whatever they need.
45. ______
Today, scientists continue to experiment with new glass mixtures and building designers test their imaginations with applications of special types of glass. A London architect, Mike Davies, sees even more dramatic buildings using molecular chemistry. "Glass is the great building material of the future, the ’dynamic skin’," he said." Think of glass that has been treated to react to electric currents going through it, glass that will change from clear to opaque at the push of a button, that gives you instant curtains."
Think of how the tall buildings in New York could perform a symphony of colours as the glass in them is made to change colours instantly. Glass as instant curtains is available now, but the cost is exorbitant. As for the glass changing colours instantly, that may come true. Mike Davies’s vision may indeed be on the way to fulfillment.
[A] What makes glass so adaptable
[B] Architectural experiments with glass
[C] Glass art galleries flourish
[D] Exciting innovations in fiber optics
[E] A former glass technology
[F] New uses of glass
42()
不属于医疗事故的法定情形有( )
A.在紧急情况下为抢救垂危患者生命而采取紧急医学措施造成不良后果的
B.在医疗活动中由于患者病情异常或者患者体质特殊而发生医疗意外的
C.在现有医学科学技术条件下,发生无法预料或者不能防范的不良后果的
D.因不可抗力造成不良后果的
E.以上都是