循环泥浆浓度SV₅如何测定？

A. 服务水平指标
B. 满足程度指标
C. 交货及时率
D. 数量的正确性

A. MTC过程有RRC连接建立过程
B. MTC过程有寻呼过程
C. MTC过程有RAB建立过程
D. MTC过程有加密过程

A. Stations not directly involved with the on-going distress communications may not transmit on the distress frequency or channel
B. Stations remaining off the air to safeguard proprietary information
C. Two three-minute silent periods，at 15 and 45 minutes after the hour，that provide a transmitting "window" for distressed vessels to transmit distress alerts using J3E
D. Communications on a distress frequency or channel is banned for 24 hours following the cessation of the distress traffic