委托代理

A. 集体责任制
B. 首长负责制
C. 集体责任制与首长负责制同时并用
D. 总统负责制

A. 正确
B. 错误

A. transmit distress signal
B. send response signal
C. transmit the signal of ship‟s position
D. be interrogated by X-band radar