航海英语海上通信章节练习(2018.02.14)

单项选择题
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
A.adherence to
B.adoption to
C.relaying on
D.usage of
单项选择题
The concept of NAVTEX is of a（）system for the broadcast and receipt of MSI.
A.search and rescue
B.safe
C.co-ordinated
D.hydrographic
单项选择题
The distance between the two NAVTEX stations with the same B1 character should be not exceed（）nautical miles.
A.400
B.240
C.450
D.180
单项选择题
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
A.which
B.on which
C.at which
D.in which
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 man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
A.danger，stay away
B.all is clear，it is safe to pass
C.the vessel is anchored
D.a distress signal
单项选择题
Overhauling a fire in the living quarters on a vessel must include（）.
A.opening dead spaces to check for heat or fire
B.evacuation of the vessel
C.sounding the "all clear" signal
D.operation of the emergency generator
单项选择题
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
A.be damaged
B.work normally regardless of harmful conditions
C.not wok though it is not in a bad condition
单项选择题
The regulations require that inspected vessels on an international voyage，other than small passenger vessels，must carry which of the following distress signals on or near the navigating bridge?（）
A.12 hand red flares
B.12 rocket parachute flares
C.12 hand combination flares and orange smoke signals
D.6 hand red flares，and 6 hand orange smoke signals
单项选择题
（） operates at a transfer rate of up to 9600 bits per second and is telephone，telex and facsimile（fax）capable.
A.INMARSAT A
B.INMARSAT C
C.SafetyNET
D.NAVTEX