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...
安全一起被建立[translate] a我高高瘦瘦的我弟弟也是 I high thin my younger brother also is[translate] a孤独症 Autism[translate] acapsized 弄翻[translate] asatellites orbit round the earth 卫星轨道围绕地球[translate]
___In recent years a number of communication satellites___into orbit around the earth. A. have been put B. were put C. had put D. are put 相关知识点: 试题来源: 解析 A 答案:A 提示:根据题意和时间是状语in recent years可知,此题应用如今完成时的被动语态,应选A。反馈 收藏 ...
A. just as B. as if C. even though D. so that 相关知识点: 试题来源: 解析 A。本题考查连词的用法。“Space probes are sent to distant planets”和“satellites orbit around the Earth”是相似的情况,用 just as 表示“正如”。反馈 收藏 ...
New Problems and New Players in the Satellite Game Over the past four decades, satellites in orbit around the earth have become absolutely critical to commerce, communication, and national security. Military and commercial dominance of (or at least basic competence in) the satellite business will ...
Illustration of competing satellites in orbit around the earth,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360、招商银行、
根据第1段中的But it'svery hard to make CubeSats that can move, so mostCubeSats simply stay in the same orbit (path) aroundthe Earth可知,CubeSat卫星无法自己移动。33.A【解析】细节理解题。根据第2段中的LightSailisa project run by the Planetary Society that is workingto change that. The ...
Satellites are lifted from the earth's surface by a rocket and, once placed in orbit, maintain their motion without further rocket power. The first artificial satellite, Sputnik I, was launched on Oct 卫星是在轨道修建由人和安置的人为对象在地球附近或其他对象在空间。 卫星从地球的表面在轨道被举...
On Feb 21,for example, US company SpaceX took 46 satellites into orbit(轨道). On Feb 27,China sent 22 satellites into space. Why do we need so many satellites? What do theydo out there?At present, there are more than 3,000 active satellites moving around the Earth,according to ...
have been sent into Earth’s orbit, around the Moon, the Sun, the other planets, and even out of the Solar System itself. At the time that I’m recording this video, there are 1071 operational satellites in orbit around the Earth. 50 percent of which were launched by the United States...