it can be very harmful to astronauts.Spacesuits also protect astronauts from radiation(辐射) in space.The suits even have parts to protect astronauts' eyes from the bright sunlight.The spacesuit includes several parts.The body equipment covers the astronaut's body.The arm equipment covers the arms...
Mars is about 225million kilometers away, so it would take astronauts at least six months to reach there.However, it only takes a few days to get to the moon.While space travel is never free of danger,it takes a lot more health risks to travel in space for a long time. For one ...
AS ET comes home to the nation's cinema screens once again, romanticised notions of what's out there will abound as Elliott's relationship with the dumpy alien melts our hearts all over again.Daily Record (Glasgow, Scotland)
根据第六段Then there's space radiation (辐射) to worry about.It might raise the risk of health problems,especially for astronauts who will have long journeys.(然后还有太空辐射要担心。这可能会增加健康问题的风险,特别是对于长途旅行的宇航员来说。)可知太空辐射可能会增加宇航员健康问题的风险,故选B。
⑥Astronauts will have to take little to see off from Earth.And they won't be able to get things they need like astronauts on the space station do,Astronauts on the space station practice for this by growing lettuce and other food in space.Engineers are developing 3 D ...
Astronauts in low-Earth orbit are protected in part by Earth's magnetic field, which deflects charged particles. Earth's atmosphere provides an additional buffer for most of the planet's surface. But that protection is not available in deep space, and the levels recorded by the RAD instrument...
Astronauts on Red Planet missions will have to contend with deep-space radiation, the effects of microgravity and the stress of confinement and isolation, all at the same time and for a long, continuous stretch. It currently takes a minimum of six months to get to Mars, after all, and jus...
英语翻译It showed that it was quite safe for a man to be outside the spaceship for a certain period of time.But to walk in space,astronauts have to meet with many kinds of difficulties and dangers.这句话的意思
英语翻译It showed that it was quite safe for a man to be outside the spaceship for a certain period of time.But to walk in space,astronauts have to meet with many kinds of difficulties and dangers.这句话的意思
C. Space radiation might raise the risk of health problems for astronauts. D. Taking certain vitamins can help reduce pressure behind the eyes in space.(D)39. What can we learn from the last paragraph? A. Engineers will help prepare bags for astronauts. B. Mars astronauts will be able ...