具体是：A space vehicle made up of two parts is travelling at 230 m/sthe mass of partA is 450kg,the mass of partB is 1200 kg.an explosion causes the 450 kg part to separate and travel with a final velocity of 280 m/sWhat was the magnitude of the

具体是：A space vehicle made up of two parts is travelling at 230 m/sthe mass of partA is 450kg,the mass of partB is 1200 kg.an explosion causes the 450 kg part to separate and travel with a final velocity of 280 m/sWhat was the magnitude of the vehicle there is a space 的space space 既可数又不可数是吗?那这里的space是指一个位子,那么什么时候不可数? just的用法和意思In December,China became just the third country toland a space vehicle on the Moon这条例句的just怎么翻译,为什么要有just在这里,在这里作什么成分? vehicle是可数还是不可数名词? all-terrain vehicle是什么车?字面意思是“所有-地形”.我猜测是一种越野车,但它具体叫什么名字,请高手指教! consider making your next car purchase a hybrid vehicle.这个句子里的purchase是名词还非谓语动词. VFP里 函数LEN(SPACE(5)-SPACE(1))的返回值是( ) A 错误信息 B 17 C 6 D4 space space 药学中a placebo vehicle是什么意思如题 关于be busy doingthe money will be used to keep a space vehicle on the moon busy ( ) back to the earth photographs and other information about the surface of the moon.A to send B being sent C to be sent D sending这道题结构是什么啊,我选 we witnessed a man-made satellite ____________(launch) into the outer space填什么,具体分析下 It would be ____to travel in space.A.impossible B.fun C.impatient D.convenient请具体说明 a space six by ten how about a space shuttle? ET is a creepy space 英语翻译Discovery has been a regular visitor to Earth's orbit since its maiden flight in 1984.It is the oldest and longest-serving vehicle in the U.S.space agency’s shuttle fleet.Discovery’s final flight follows several delays due to technica