髋关节属于（）
A.鞍状关节
B.球窝关节
C.滑车关节
D.椭圆关节
参考答案：B
-You don't have to play that record so loud,do you?
-I'm sony. __ you?[ ]
A. Has it been bothering
B. Did it bother
C. Will it bother
D. Had it bothered
电业安全工作规程》按照什么原则制定的？贯彻什么方针？
