[单项选择]
Passage One

Astronaut Jim Voss has enjoyed many memorable moments in his career, including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound (为地球吸引所束缚的) experience in the summer of 1980, when he participated in the NASA-ASEE Summer Faculty Fellowship Program. Voss then a science teacher at West Point, was assigned to the Marshall Space Flight Center’s propulsion (推进) lab in Alabama to analyze why a hydraulic fuel pump on the space shuttle was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program. Yet it was important to NASA because any crack in the seal could have led to destructive results for the astronauts who relied on them. "I worked a bit with NASA engineers," says Vo A. Three B. Two C. Four D. Five 查看答案 更多"Passage One Astronaut Jim"的相关试题: [单项选择] Passage One Astronaut Jim Voss has enjoyed many memorable moments in his career, including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound (为地球吸引所束缚的) experience in the summer of 1980, when he participated in the NASA-ASEE Summer Faculty Fellowship Program. Voss then a science teacher at West Point, was assigned to the Marshall Space Flight Center’s propulsion (推进) lab in Alabama to analyze why a hydraulic fuel pump on the space shuttle was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program. Yet it was important to NASA because any crack in the seal could have led to destructive results for the astronauts who relied on them. "I worked a bit with NASA engineers," says Vo A. Because previous seals all failed. B. Because it was very complex in running the space program. C. Because great care has to be taken of the hydraulic fuel pump sealing. D. Because any crack in the seals would cause disastrous results for the astronauts. 查看答案 [单项选择]Passge Three Astronaut Jim Voss has enjoyed many memorable moments in his career, including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound(只在地球上的) experience in the summer of 1980 when he participated in the NASA-ASEE Summer Faculty Fellowship Program. Voss, then a science teacher at West Point was assigned to the Marshall Space Flight Center’s propulsion(推进) lab in Alabama to analyze why a hydraulic fuel pump seal on the space shuttle was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program` Yet it was important to NASA because any crack in the seal could have led to destructive results for the astronauts who relied on them. "I worked abit with NASA engineers, "says Voss, "but I did it mostly by analys A. Because previous seals all failed. B. Because it was very complex in running the space program. C. Because great care has to be taken of the hydraulic fuel pump sealing. D. Because any crack in the seals would cause disastrous results for astronauts. 查看答案 [单项选择]Astronaut Jim Voss has enjoyed many memorable moments in his career, including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound(只在地球上的) experience in the summer of 1980 when he participated in the NASA-ASEE Summer Faculty Fellowship Program. Voss, then a science teacher at West Point was assigned to the Marshall Space Flight Center’s propulsion(推进) lab in Alabama to analyze why a hydraulic fuel pump seal on the space shuttle was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program` Yet it was important to NASA because any crack in the seal could have led to destructive results for the astronauts who relied on them. "I worked abit with NASA engineers, "says Voss, "but I did it mostly by analysis. I used a handheld calculator, not a computer, to do a thermodynamic(热力学的) analysis. "At the end of the summer, he, like the other NASA-ASEE fellows wor A. Because previous seals all failed. B. Because it was very complex in running the space program. C. Because great care has to be taken of the hydraulic fuel pump sealing. D. Because any crack in the seals would cause disastrous results for astronauts. 查看答案 [单项选择]Passage 2 Another thing an astronaut has to learn about is eating in space. Food is weightless, just as men are. Food for space has to be packed in special ways. Some of it goes into tubes that a man can squeeze into his mouth. Bite-sized cookies are packed in plastic. There is a good reason for covering each bite. The plastic keeps pieces of food from travelling in the spaceship. On the earth very small pieces of food would simply fall to the floor. But gravity doesn’ t pull them to the floor when they are out of the plastic in a spaceship. (78) They move here and there and can get into a man’ s eyes or into the spaceship’ s instruments. If any of the instruments is blocked, the astronauts may have trouble getting safely home. As astronauts travel on longer space trips, he must take time to sleep. An astronaut can fit himsel A. Because small pieces of food would fall down to the floor. B. Because weightless pieces of food might make trouble when they travel around. C. Because they haven’ t enough food for longer trips. D. Because astronauts don’ t want to waste food. 查看答案 我来回答: 提交 最新试题 ●    [单选题]LKJ-2000型监控记录装置A.B机同时故障时，报警时间达到()监控装置实施紧急制动 ●    [单选题]LKJ监控记录装置能够完成______ 的记录与同步。 ●    [单选题]《普速铁路接触网运行维修规则》规定：拆除或长期停用接触网和变更绝缘水平报（ ）审批 ●    [单选题]：列车运行监控记录装置。 ●    [单选题]监控记录装置主要完成地面线路的存储与调用、运行状态数据的记录与同步。 ●    [判断题]LKJ监控记录装置主要完成地面线路的存储与调用、运行状态数据的记录与同步。 网站地图 我要搜题网  版权所有  ©2023  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码