B.EGC C.MSI D.DSC 选D
32.With the help of modern technology,ships are able to receive autom messages______ A.by day or at night B.almost round the clock C.somewhat and sometime D.from sunrise to sunset 选B
33. The letter D is the abbreviation for the word distress in_______ A. ADE B.GMDSS
C. NBDP D. DSC 选B
34. It is ____for marines to combine the SART with a float-free ? EPRIB A. essential B. compulsory C. optional D. inadvisable 选C
35._______indicates that a ship is distress and requires immediate assistance . A. Distress traffic B. Urgency traffic C. Safety traffic
D. Routine message 选A
36.Which system is often used to provide accurate vessel position information equipment? A. GPS
B. COSPAS-SARSAT C. EPIRB D. INMARSAT-F 选A
37.Both the satellite communication and terrestrial communications will_______
A. not be used in the GMDSS
B. be used only for general communications C. be replaced by Morse D. be used in the GMDSS
选D
38．Ship in area A2 will at least transmit a ship-to-shore alert on _____and satellite EPIRB A. 2182KHz B. 2174.5KHz C. 2187.5KHz D. 156.8KHz 选C
39．Only the polar regions , where shipping is infrequent , are not covered In this sentence “shipping”meams_______ A. ships
B. shipping industry C. navigation of ships D. shipping company
选C
40．How long will the SART operate when in stand-by condition? A. 86 hours B. 20 hours C. 55 hours D. 96 hours 选D
41. In NAVTEX service , the subject indicator characters A means_____ A. meteorological warnings B.navigational warnings C.search and rescue information D.meteorological forecast 选B