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
