A.keep
B.kept
C.are keeping
D.have kept
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A.has made
B.make
C.has been made
D.is making
A.When the distress alert is sounded
B.When the emergency equipment is switching on
C.When the general emergency alarm is sounded
D.When the distress broadcast is sounded
A.When
B.Where
C.how
D.that
A.If
B.Whenever
C.Because
D.Where
A.transmit
B.to transmitting
C.transmitting
D.in transmitting
最新試題
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
On-scene communications will normally take place between（）.
Radio beacon can be activated（）in case of distress.
COSPAS-SARSAT is intended to be used for（）.
SOLAS ships shall be equipped with（）.
The advantage of geostationary satellites is（）.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
The vessel has stayed in port for seven days because she needs（）.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
We consider（）send a helicopter with medical facilities to the distress area.