航海英语海上通信章节练习(2018.01.25)

单项选择题
SafetyNet is a maritime safety information broadcast service offering（）on suitably equipped ships.
A.free reception
B.free transmission
C.dedicated reception
D.dedicated transmission
单项选择题
Channel 13 (156.65 MHz)，the designated bridge-to-bridge channel，may NOT be used to（）.
A.exchange navigational information between vessels
B.exchange navigational information between a vessel and a shore station
C.conduct necessary tests
D.exchange operating schedules with company dispatcher
单项选择题
The light rhythm of Morse (A) is shown on（）.
A.preferred-channel buoys
B.starboard- or port-side buoys
C.special marks
D.safe water buoys
单项选择题
Which statement concerning GMDSS Radio Operator requirements is FALSE（）.
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
单项选择题
What is a functional or carriage requirement for compulsory vessels?（）
A.A compulsory vessel must carry at least two licensed GMDSS Radio Operators
B.A compulsory vessel must satisfy certain equipment carriage requirements that are determined by where the vessel sails
C.A compulsory vessel must be able to transmit and respond to distress alerts
D.All of the above
单项选择题
Take tug’s towing line to（）.
A.captain
B.capstan
C.capital
D.carpenter
单项选择题
The Inmarsat SES operator can choose the most suitable CES according to（）.
A.his service and position
B.time and course
C.tide and speed
D.type of his ship
单项选择题
At sea，all required GMDSS equipment（other than survival craft equipment）must be proven operational by（）.
A.daily testing
B.either A or C
C.operational use of the equipment
D.testing at least every 48 hours
单项选择题
DSC distress acknowledgements are normally transmitted by（）in respond to a receiver DSC distress call.
A.Ship stations
B.Coast stations
C.NCSs
D.NCC
单项选择题
A radio determination system based on the comparison of reference signals with radio signals reflected,or retransmitted from the position to be determined,is（）.
A.DF
B.Radar System
C.DSC System
D.COSPAS-SARSAT