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