Satellites orbit ___ the earth. A. around B. on C. in D. at 相关知识点: 试题来源: 解析 A。本题考查介词的用法。“around”表示“围绕”,卫星围绕地球转,所以选 A。“on”表示“在……上面”,不符合卫星与地球的位置关系;“in”表示“在……里面”,也不合适;“at”表示“在……地点”,不...
Satellites move___around the Earth. A. slowly B. quickly C. carefully D. lazily 相关知识点: 试题来源: 解析 B。卫星通常快速地围绕地球运动,quickly 符合卫星的运动特点。选项 A“slowly”(缓慢地)不符合实际情况;选项 C“carefully”(小心地)和选项 D“lazily”(懒惰地)也不恰当。反馈...
What are different types of satellites?Overview of artificial satellites, including the problem of overcrowding. See all videos for this article Earth satellite, artificial object launched into a temporary or permanentorbitaroundEarth.Spacecraftof this type may be either crewed or uncrewed, the latter...
1, 2021, SpaceX is leading the race, with their Starlink satellite program planning to send more than a thousand new satellites into orbit every year. SpaceX owns an incredible 36% of the satellites in orbit around Earth. Read on to see which governments, organizations, and companies own ...
(238,900 miles). TheMoonis one of the bigger natural satellites in the solar system; only the giant planets have moons comparable or larger in size. Some planetary astronomers consider the Earth-Moon system a double planet, with some similarity in that regard to thedwarf planetPlutoand its ...
由第一句可知,第二句的主语They是指minute satellites,也就是说微型卫星主要是在近地轨道上运行,这使操作人员能够从近地轨道上研究地球。题干中的Mini-satellites对应定位句中的minute satellites,题干中的study Earth from LEO and space around it是对定位句中study Earth from space, as well as space around ...
Earth science satellites Merlin Merlin will use its LIDAR to probe the atmosphere and determine the varying concentrations of methane. This gas, along with carbon dioxide, is a major contributor to the greenhouse effect. Microcarb MicroCarb will be the first European mission dedicated solely to mea...
百度试题 结果1 题目There are many artificial satellites___(绕轨道飞行) around the earth。相关知识点: 试题来源: 解析 orbiting 反馈 收藏
weather satellites与put into之间为被动关系,应用被动语态;句意和句中的these years说明应用现在完成时,选C。结果一 题目 A number of weather satellites into space around the earth these years.A.have putB.were putC.have been putD.are put 答案 C...
We use satellites to send television pictures from one part of the world to another.They are usually 35,880 kilometers above the equator.Sometimes we can see a satellite in the sky and it seems to stay in the same place.Thisis because it is moving around the world at 11,000 kilometers...