首页
登录
职称英语
Another thing an astronaut has to learn about is eating in space. Food is we
Another thing an astronaut has to learn about is eating in space. Food is we
游客
2024-01-16
6
管理
问题
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. 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 himself to his seat with a kind of seat belt. Or, if he wants to, he can sleep in a sleeping bag which is fixed in place under his seat. But be careful he must put his hands under the belt when he goes to sleep. This is because he is really afraid that he might touch one of controls that isn’t supposed to be touched until later. [br] Why would astronauts cover each bite of food in space?
选项
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.
答案
B
解析
细节题。文章第二段主要解释了食物要用塑料包起来的原因。在太空中由于不存在重力,食物就会到处移动,可能飞到人的眼睛里或宇宙飞船的仪器中,引起麻烦。故选B。
转载请注明原文地址:https://tihaiku.com/zcyy/3366833.html
相关试题推荐
Thefisherman,()poor,couldnotbuyanotherboat.A、isB、wasC、beingD、beenC本题
()Japanese,shehastostudyanotherforeignlanguage.A、ExceptB、ExceptforC、I
Anotherthinganastronauthastolearnaboutiseatinginspace.Foodiswei
Anotherthinganastronauthastolearnaboutiseatinginspace.Foodiswei
Anotherthinganastronauthastolearnaboutiseatinginspace.Foodiswei
Somecountriesarecreatingpoliciestodealwiththegrowinge-wasteproblem.有一
Itisindeedthecasethatcheatingonexamhasbeenseriousatschool.Many
Itisindeedthecasethatcheatingonexamhasbeenseriousatschool.Many
Itisindeedthecasethatcheatingonexamhasbeenseriousatschool.Many
Oneofthebestwaysforpeopletokeepfitisto______healthyeatinghabits.A、g
随机试题
[originaltext]Let’sfaceit--weallhavesomeformofstress.Whetherit’
事故处理经过评定和验收后,( )下达《复工通知》。A.监理工程师 B.总监理
工具避孕注意事项不正确的叙述是A、术后1周内不宜过重体力劳作 B、2月内禁性
( )是导游人员获得游客的认同和接感受,进而吸引与团结游客,高质量完成导游工作
点的地理坐标中,平面位置是用()表达的。A:直角坐标B:经纬度C:距离和方位
共用题干 MadScientistStereotypeOutdatedD
急性再障早期的临床特点是A:出血为主 B:黄疸为主 C:贫血为主 D:肝脾
省检修公司、地市公司每年11月15日前编制仪器仪表校验计划,报送省评价中心。省评
我国的《政府采购法》明确规定,政府采购实行()的方法。A.集中采购 B.分散采
眼(眼球运动、间接对光反射、直接对光反射、辐辏反射、眼球震颤检查)。
最新回复
(
0
)