However, the size of the rocket is limited by the size and strength of the aircraft, so only smaller satellites can be launched this way.According to the second paragraph, which of the following is NOT true() A. The first stage of a multistage rocket consists of rocket engines that ...
Many countries spend large amounts of money and time (1) exploring(explore)space.Some people believe it's(2) awaste of time and money. (3) However,exploring space is of great help.Firstly,it has helped rid the world (4) ofhunger.Many satellites(5) orbiting(orbit) Earth can record dat...
As space becomes more accessible, the number of satellites being launched into orbit has increased substantially with little or no framework in place to regulate what happens to leftover debris or out-of-commission spacecrafts. The Earth's orbit, therefore, has grown increasingly congested. The SSR...
Over the last few decades, satellites and rockets have been launched into space, littering the cosmos as they go. It's estimated there are now millions of thrown-away pieces of metal and other materials in orbit—everything from old rocket pieces to accidentally dropped astronaut tools, and ev...
collision involving such material increase greatly as theamountof spacedebrisand thenumberofsatellites...
Warning from Experts A growing amount of human-made orbital debris(太空轨道残骸)—from rocket stages and out-of-date satellites —is circling the Earth. Scientists say the orbital debris, better known as space junk, poses an increasing threat to space activities. "This is a growing environmental...
rd.of.使.摆,故填of 5.orbiting考查非谓语动词。分析句子结构可知,设空处作后置定语,satellites与orbit为主动关系,故填orbiting 6.toprovide考查非谓语动词。此处应该用不定式作目的状语,故填toprovide。 7.which考查定语从句。设空处引导非限制性定语从句,先行词为high--end products,关系词在从句中作主语,故填...
waste of time and money. , exploring space is great help. Firstly, it has helped rid the world of hunger. Many satellites (orbit) Earth can provide data on land and weather patterns. Then scientists analyse it (provide) useful advice for farmers. Secondly, space exploration needs advanced ...
Many countries spend large amounts of money and time 1 ( explore ) space. Some people believe it's2 waste of time and money. 3, exploring space is of great help. Firstly, it has helped rid the world 4hunger. Many satellites 5 (orbit) Earth can record data on land and weather ...
The short interval of less than two months since the last launch demonstrated that "the country is stepping into a busy period of launching the Compass satellites", an unnamed official in charge of the project said last month. The first two orbiters were launched in 2007 and 2009 respectivel...