首页
登录
职称英语
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_174[/audioFiles] Space G
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_174[/audioFiles] Space G
游客
2024-09-18
4
管理
问题
选项
答案
Space Gym
Physical fitness is an important part of being an astronaut. / Astronauts must be healthy enough to perform tasks while in space, / such as taking a space walk to repair an external piece of equipment. / In space, muscles, including the heart, can lose strength and endurance / as they don’t have to interact with gravity. / Astronauts use athletic equipment modified for this special environment to maintain their physical fitness. / For example, a special running machine is used to increase their endurance, / so they can work for longer periods of time without getting tired. / They also pull against vacuum cylinders, / which lack air, to create resistance and work their muscles. / And they ride an unusual stationary bicycle to help improve the health of their hearts. / Astronauts have to strap in to this bicycle, / because a lack of gravity prevents them from sitting down and staying put. / Special shoes also snap into its pedals / to make sure astronauts don’t just float away. /
解析
太空健身房
成为一名宇航员,身体健康是一个重要条件。宇航员必须足够健康才能在太空中执行任务。在太空里,包括心脏在内的肌肉会失去力量和耐力。宇航员使用专为这种特殊环境改良过的运动器材来维持其身体的健康状态。例如,一种特制的跑步机就可以用来帮助增加宇航员的耐力。他们也会拉真空筒,使肌肉得到锻炼。
转载请注明原文地址:https://tihaiku.com/zcyy/3763493.html
相关试题推荐
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_137[/audioFiles]Differe
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_136[/audioFiles]Disney
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_172[/audioFiles]Earthqu
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_115[/audioFiles]TheFoo
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_114[/audioFiles]Univers
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_113[/audioFiles]America
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_112[/audioFiles]Online
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_085[/audioFiles]Educati
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_083[/audioFiles]On-camp
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_195[/audioFiles]Forest
随机试题
[audioFiles]audio_eusm_0207(20106)[/audioFiles]A、Manywelcometheideaofhavin
Wecanseehoweveryphilosopherreflectsthesociallifeofhisday.Plato
It’sreportedthatthepoliceare_______theareaforthecriminal(罪犯).A、proces
企业计提短期借款的利息支出时应借记的账户是()。A.“财务费用”账户 B.“短
必须依法进行勘察设计招标的工程建设项目,招标时应具备的以下条件中,( )不正确
混凝土强度的决定性因素有( )。 A、水灰比 B、骨料的颗粒形状 C
某企业上年12月31日资产负债表部分项目的年初数和期末数如表7—4所示(单位:元
一个三位数除以9余7,除以5余2,除以4余3,这样的三位数共有()。A.5个
开展居间合作的自然人不得有下列( )情况。A.最近三年内受过刑事处罚 B.最近
A.艾滋病 B.霍乱 C.蛔虫病 D.血吸虫病 E.流行性感冒乙类传染病
最新回复
(
0
)