trắc nghiệm GMDSS DSC

Tổng quan hệ thống GMDSS phục vụ TKCN. Năm 1979,Tổ chức Hàng Hải quốc tế (International Maritime Organization IMO) đã tổ chức hội nghị về vấn đề tìm kiếm và cứu nạn trên biển. ... Hệ thống mới được tự động hóa và sử dụng sóng vô tuyến trái đất và vệ tinh cho báo động cấp cứu và các thông tin theo sa

Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B The correct channel for making Routine DSC Alerts in the VHF band is Ch.06 Ch.16 Ch.67 Ch.70 A A coast station making a DSC international Routine shore-to-ship alert transmits on 2182 kHz 2177 kHz 2187.5 kHz 2189.5 kHz A The use of VHF Ch.70 is for narrow band direct printing (NBDP) NAVTEX broadcasts calling by telephony Digital Selective Calling (DSC) A A VHF DSC All Ships Safety Alert should be transmitted on Ch.06 Ch.16 Ch.13 Ch.70 A Routine DSC alerts are permitted on VHF Ch.70 at NO time restricted to between 0900 and 1700 UTC at ANY time restricted to between 1200 and 0900 UTC A An MF DSC All Ships Safety Alert should be transmitted on 2187.5 kHz 2177.0 kHz 2189.5 kHz 2174.5 kHz A Routine DSC ship-to-ship alerts are permitted on 2187.5 kHz VHF Ch.16 2189.5 kHz VHF Ch.70 A To make a national ship-to-shore DSC Alert, your first choice of MF frequencies should be ship transmits on 2187.5 kHz, and receives on 2187.5 kHz ship transmits on 2177 kHz, and receives on 2177 kHz C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D ship transmits on 2189.5 kHz, and receives on 2177 kHz national paired call and reply DSC frequencies A An All Ships MF DSC Urgency Alert should be transmitted on 2174.5 kHz 2189.5 kHz 2177.0 kHz 2187.5 kHz A An All Ships MF DSC Safety Alert should be transmitted on 2174.5 kHz 2189.5 kHz 2187.5 kHz 2177 kHz A Routine DSC Alerts between ships are permitted on VHF Ch.70 2187.5 kHz 2189.5 kHz VHF Ch.16 A When making a Routine DSC ship-to-ship alert on Ch.70 VHF, the VHF RT working channel you would select could be Ch.70 Ch.67 Ch.06 Ch.16 A Routine DSC Alerts can be made on 2187.5 kHz between 1700 and 0900 UTC at NO time between 0900 and 1700 UTC at ANY time A VHF Ch.70 can be used to make DSC Distress, Urgency, Safety and Routine Alerts Distress and Safety Alerts only Distress Alerts only Urgency and Safety Alerts only A A ship makes a Routine manual DSC ship-to-shore alert but receives no response Further alerts may be made after minutes, with the next alert 15 minutes later at minute intervals after minutes with the next alert minutes later at minutes intervals Dap an Cau hoi A B C D Dap an A To make an international DSC Routine ship-to-shore alert,the ship transmits on 2177 kHz 2189.5 kHz 2182 kHz 2187.5 kHz A ... national paired call and reply DSC frequencies A An All Ships MF DSC Urgency Alert should be transmitted on 2174.5 kHz 2189.5 kHz 2177.0 kHz 2187.5 kHz A An All Ships MF DSC Safety Alert should be... 2189.5 kHz 2187.5 kHz 2177 kHz A Routine DSC Alerts between ships are permitted on VHF Ch.70 2187.5 kHz 2189.5 kHz VHF Ch.16 A When making a Routine DSC ship-to-ship alert on Ch.70 VHF, the VHF... Ch.67 Ch.06 Ch.16 A Routine DSC Alerts can be made on 2187.5 kHz between 1700 and 0900 UTC at NO time between 0900 and 1700 UTC at ANY time A VHF Ch.70 can be used to make DSC Distress, Urgency, Safety