Diapers: What Keeps Babies and Astronauts from Springing a Leak?Science BuddiesMegan Arnett
A. some things can be fixed by astronauts during spacewalks B. all experiments must be placed on the outside of a spacecraft C. an astronaut can get out of a spacecraft any time while in space (2)Why does an astronaut wear spacesuits on spacewalks? ( ) A. It keeps an astronaut ...
(2)C .细节理解题.根据第二段中When astro nauts go on spacewalks , they wear spacesuits to keep themselves safe . Inside spacesuits , astronauts have the orygen () they nee d to breathe and the water they need to drin k.可知当宇航员进行太空行走时,他们会穿上宇 航服来保证自己的安全....
A planet does not have to have a moon to be a planet. Pluto has numerous moons but is not a planet in the same sense as Earth. Also, Mercury has no moons but is a fully-fledged planet like Earth. All the gas planets, including Jupiter and Neptune, have rings of dust. Jupiter's ...
(go) wrong.What's more,my spacesuit keeps me safe from the (5) exposure(expose) to the Martian surface for up to several hours at (6) a time.Water and oxygen were my biggest worries at first,but I've discovered an underground ice deposit nearby.I can reach the ic...
___ EMUs protect astronauts while they do their jobs outside the spaceship. Putting on the Suit An EMU has many parts. First, an astronaut puts on a full body suit that keeps him or her cool. Then, the astronaut puts on a top and bottom to keep safe. ___ Now it’s time to put...
阅读下面短文,从方框中所给的 A ~E五个选项中选择正确的答案,并将其序号填入第1~4题(其中一项是多余选项),然后回答第5题。What do astronauts we
Another way astronauts stay safe during spacewalks is by wearing a SAFER. SAFER is worn like a backpack. It helps an astronaut move around in space.How do astronauts train for spacewalks? One way is by going for a swim. Floating in space is a lot like floating in water. Astronauts ...
— NASA's Orion capsule, which the agency is developing to help get astronauts to Mars and other destinations in deep space, aced its first flight test on Dec. 5, 2014. During that unmanned mission, known as Exploration Flight Test-1 (EFT-1), Orion orbited Earth twice and then came ...
Inside spacesuits, astronauts have the oxygen they need to breathe and the water they need to drink. To keep the astronauts and the spacecraft safe, the astronauts must leave and go back to the spacecraft through a special door. When on a spacewalk, astronauts use safety tethers to stay ...