send rescue signal()
A、接受救援信号
B、发送求救信号
C、发送消防信号
D、鸣信号
A、接受救援信号
B、发送求救信号
C、发送消防信号
D、鸣信号
A、Signal absorption by the ionosphere B、Heavy sea swells C、The rescue personnel were monitoring the 10-cm radar D、The rescue personnel were monitoring the 3-cm radar
A、World Port Index B、International Code of Signals C、Sailing Directions D、Merchant Ship Search and Rescue Manual (MERSAR)
A、fire a green star to the left B、send the letter K by light and point to the left C、place an orange signal to your left as you signal with a white light D、send the code signal S followed by L
A、fire a green star to the left B、send the letter K by light and point to the left C、place an orange signal to your left as you signal with a white light D、send the code signal S followed by L
A、transmit distress signal B、send response signal C、transmit the signal of ship‟s position D、be start by X-band radar