單項選擇題
A.all required documents and publications may have to be produced B.licensed GMDSS radio operators may be required to demonstrate equipment competencies C.all required equipment must be fully operational D.All of the above
A.manually activated and operate on maritime (VHF) channels B.automatically activated and operate on maritime (VHF) channels C.manually operated and detected by satellite D.automatically operated and detected by satellite
A.self-propelled，inspected vessels B.towing vessels C.recreational vessels D.uninspected passenger vessels
A.orbiting satellites in space B.commercial radio stations C.private，commercial，and military aircraft D.ordinary radio stations
A.One approved Class A EPIRB B.Two approved Class A EPIRBs C.One approved Class B EPIRBs D.Two approved Class B EPIRBs
A.does not have berthing facilities B.has berthing and galley facilities C.is a workboat and her mother ship carries an EPIRB D.None of the above are correct
A.the information can be received on an ordinary FM radio B.warnings are printed out for reading when convenient C.broadcasts are at scheduled times D.a low frequency band is used for long distance transmission
A.submarine EPIRB B.safety EPIRB C.ship EPIRB D.survival craft EPIRB
A.is primarily designed for vessels operating up to 50 miles offshore or on foreign waters B.transmits a signal that can be detected by satellite C.must be manually activated D.operates in the medium and low frequency bands
A.approved by the CCS B.designed for float free，automatic activation C.operated on 121.5/243 MHz D.operated manually
A.a safety line attached to a man working over the side B.used to measure water depth C.used to slow the headway of a barge D.used to measure the overhead height of a bridge
微信掃一掃關(guān)注公眾號后聯(lián)系客服
微信掃碼免費搜題
