71. How many GMDSS radio operators are needed／required on board according to the provisions of the International Convention for the Safety of Life at Sea，1974？

A . By the On Scene Coordinator (OSC) B . By the Coast Earth Station (CES) controlling the distress communications on that frequency C . It is imposed by the Public Correspondence Station (PCS) controlling the distress communications on that frequency or channel D . It is imposed by the High Seas Service (HSS) controlling the distress communications on that frequency or channel

A . 5 B . 10 C . 14 D . 20

A . Quite a bit. B . More boys than girls. C . About . D . Three mornings.

A . The transmission is aborted and an alarm sounds to indicate this data must be provided by the operator B . The transmission is not initiated and "ERROR" is indicated on the display readout C . The transmission will be made with "default" information provided automatically D . The receiving station will poll the DSC unit of the vessel in distress to download the necessary informatio

A . 6 months B . 1 year C . 2 years D . 3 year

A . Each compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at sea B . Each compulsory vessel must carry at least two licensed Radio Operators at all times while at sea and may elect to carry a GMDSS Radio Maintainer as well C . Communications involving safety of life at sea do not have to be logged as long as the compulsory vessel was not involved in such communications D . While at sea，adjustments to，and the maintaining of，GMDSS equipment may be performed by the GMDSS Radio operator as long as the work is supervised by an onboard licensed GMDSS Radio Maintainer

A . has been used B . have been used C . has used D . have used

A . No action is necessary，as the DSC control unit will automatically switch to the NBDP follow-on communications frequency B . The operator should immediately set continuous watch on the radiotelephone frequency that is associated with the frequency band on which the distress alert was received C . The Operator should immediately set continuous watch on VHF channel 70 D . The Operator should immediately set continuous watch on the NBDP frequency that is associated with the frequency band on which the distress alert was received

A . sweeping bag B . sweepings bag C . sweeping bags D . sweepings bag

A . Navigational Warnings B . Meteorological Warnings C . Search and Rescue Information D . All of the above

A . By its subscriber number B . By its call sign C . By its MMSI D . By its MID

A .  8 B .  14 C .  23 D .  7 E .  19

A . At least two years after the last entry B . At least one year after the last entry C . At least 90 days after the last entry D . At least 30 days after the last entry

A .  8 B .  5 C .  4 D .  3

A . One approved Category 1 EPIRB B . Three approved Category 1 EPIRBs C . One approved Class B EPIRB D . Two approved Class B EPIRB

A . The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percent B . The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstacles C . All levels of maintenance must be performed by a licensed GMDSS Radio Maintainer D . The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraint

A . It will abort the transmission and set off an audible alarm that must be manually reset B . It will initiate the DSC distress alert but，as no information will be transmitted，rescue personnel will not be able to identify the vessel，its position or its situation C . It will initiate the DSC distress alert and default information will automatically be transmitted D . It will initiate the DSC distress alert，but any station receiving it will have to establish contact with the distressed vessel to determine its identity，position and situatio

A . In the Captain's office B . In the sea cabin C . At the GMDSS operating position D . Anywhere on board the vessel

A.int B.static int C.int Point：： D.static int Point：：

A．8 B．6 C．10

A．charge B．cost C．pay D．spend