与卫星有关的误差包括哪几类?
参考答案:
与卫星有关的误差包括:
卫星星历误差;
卫星钟的钟误差;
相对论效应。
___ the room, the nurse found the tape-recorder ___.
A.Entering; stealing
B.Entering; gone
C.To have entered; being stolen
D.Having entered; to be stolen
—Is it your ticket?
—No, _______ is in my pocket. It's ________. [ ]
A. mine; her
B. my; his
C. mine; hers
D. my; hers