It is required that ships proceeding at sea should keep continuous watch on（）.<br>A:VHF channels 16 and 13<br>B:Appropriate DSC distress and safety frequencies<br>C:INMARSAT TDM message channel<br>D:VHF channel 70 and channel 8

It is required that ships proceeding at sea should keep continuous watch on（）.
A:VHF channels 16 and 13
B:Appropriate DSC distress and safety frequencies
C:INMARSAT TDM message channel
D:VHF channel 70 and channel 8

出自：海船船员证

提示：
同一【IP】的非会员用户每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10252937】个 (题库试题定时更新)