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Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphere again acts (67) our protective blanket on earth. Light gets through, and this is (68) for plants to make the food (69) we eat. Heat, too, makes our environment endurable. Various kinds of rays (70) through the air from outer space, (71) enormous quantities of radiation from the sun are (72) off. As soon as men leave the atmosphere they are (73) to this radiation but their spacesuits or the walls of their spacecraft, (74) they are inside, do prevent a lot of radiation damage. Radiation is the greatest known (75) to explorers in space. The unit of radiation is called "rein (雷姆)". Scientists (76) reason to think that a man can put up with far more radiation (77) 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely (78) to be sure about radiation damage-a person may feel perfectly well, but the (79) of his or her sex organs may be damaged, and this will not be discovered (80) the birth, of deformed children or even grandchildren. Missions of the Apollo flights have had to cross belts of high amount of reins. So far, no dangerous amounts of radiation have been (81) , but the Apollo missions have been quite (82) . We simply do not know yet how men are going to get on when they (83) weeks and months outside the (84) of the atmosphere, working in a space laboratory. Drugs might help to (85) the damage done by radiation, but no really (86) ones have been found so far.
Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphere again acts (67) our protective blanket on earth. Light gets through, and this is (68) for plants to make the food (69) we eat. Heat, too, makes our environment endurable. Various kinds of rays (70) through the air from outer space, (71) enormous quantities of radiation from the sun are (72) off. As soon as men leave the atmosphere they are (73) to this radiation but their spacesuits or the walls of their spacecraft, (74) they are inside, do prevent a lot of radiation damage. Radiation is the greatest known (75) to explorers in space. The unit of radiation is called "rein (雷姆)". Scientists (76) reason to think that a man can put up with far more radiation (77) 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely (78) to be sure about radiation damage-a person may feel perfectly well, but the (79) of his or her sex organs may be damaged, and this will not be discovered (80) the birth, of deformed children or even grandchildren. Missions of the Apollo flights have had to cross belts of high amount of reins. So far, no dangerous amounts of radiation have been (81) , but the Apollo missions have been quite (82) . We simply do not know yet how men are going to get on when they (83) weeks and months outside the (84) of the atmosphere, working in a space laboratory. Drugs might help to (85) the damage done by radiation, but no really (86) ones have been found so far.
利用并行处理技术可以缩短计算机的处理时间，所谓并行性是指（80）。可以采用多种措施来提高计算机系统的并行性，它们可分成三类，即（81）。提供专门用途的一类并行处理机（亦称阵列处理机）以（82）方式工作，它适用于（83）。多处理机是目前较高性能计算机的基本结构，它的并行任务的派生是（84）。 81（）
有1台10kV，800kW异步电动机，cos=0.8，起动电流倍数为10，可自起动，系统接地电流为15A，10kV母线短路容量为200MV.A(最小方式)，请列出保护配置，选择电流互感器变比，并计算保护动作电流、短路电流和灵敏系数。 计算电流速断保护的灵敏系数为( )。
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