如图中的圆a、b、c,其圆心均在地球的自转轴线上,b、c的圆心与地心

如图中的圆abc,其圆心均在地球的自转轴线上,bc的圆心与地心重合,对卫星环绕地球做匀速圆周运动而言(   )

A.卫星的轨道可能为a            

B.卫星的轨道可能为b

C.卫星的轨道可能为c           

D.同步卫星的轨道只可能为b

答案

BCD

相关题目

质子和α粒子由静止开始在同一电场中加速,此后垂直电场方
质子和α粒子由静止开始在同一电场中加速,此后垂直电场方向进入同一电场偏转,离开偏转场后打在荧光屏上,下列说法正确的是(   )A.到达荧光
Without electricity human life_______quite different today.A. is 
Without electricity human life_______quite different today.A. is     B. will be  C. would have been     D. would be
__ _ exciting news it is that we have won the match A.What a  B.What an
__ _ exciting news it is that we have won the match A.What a  B.What an  C.What  D.How
 “千里冰封、万里雪飘”这种景象所对应的主要物态变化是
 “千里冰封、万里雪飘”这种景象所对应的主要物态变化是( ) A.汽化和液化         B.汽化和升华         C.凝固和凝华        D.
如图,已知反比例函数y=(x>0,k是常数)的图象经过点A(1
如图,已知反比例函数y=(x>0,k是常数)的图象经过点A(1,4),点B(m,n),其中m>1,AM⊥x轴,垂足为M,BN⊥y轴,垂足为N,AM与BN的交点为C. (1
As I entered the already crowded church, my stomach jumped. What if I ___1___ ho
As I entered the already crowded church, my stomach jumped. What if I ___1___ how to play my piece? What if I skipped a note? My parents gave me a look of ___2___ as I sat at my place. I kept looking
(一)爱国忧民 1.为人称颂的诗歌多包含着“心系万民苍生”的
(一)爱国忧民 1.为人称颂的诗歌多包含着“心系万民苍生”的博大胸怀。杜甫用“,”(《茅屋为秋风所破歌》)的呐喊表现了对贫寒士子的关怀;张养浩用
丙烯酰胺(H2C===CH—CONH2)具有中等毒性,它对人体可造成神经
丙烯酰胺(H2C===CH—CONH2)具有中等毒性,它对人体可造成神经毒性和遗传毒性。丙烯酰胺主要是由高碳水化合物、低蛋白质的植物性食物在加热(120 ℃以上

最新题目