A.分鐘呼,小時(shí)呼 B.天呼,秒呼 C.年呼,天呼 D.小時(shí)呼,天呼
A.來(lái)話匯接 B.去話匯接 C.來(lái)去話匯接 D.集中匯接
A.33ms,66ms B.66ms,33ms C.55.6ms,27.8ms D.27.8ms,55.6ms