A.was suffering
B.is suffering
C.has suffered
D.has been suffering
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A.see
B.seeing
C.be seen
D.being seen
A.where
B.when
C.after
D.unless
A.That
B./
C.When
D.What
A.If
B.Whenever
C.Because
D.Where
A.transmit
B.to transmitting
C.transmitting
D.in transmitting
最新試題
Before GMDSS, if the radio officer on board is serious ill,（）.
The vessel has stayed in port for seven days because she needs（）.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
SOLAS ships shall be equipped with（）.
All coast radio stations（）DSC installed for VHF and HF.
Please use（）for（）.
（）will form the basis for distress alerting and safety calling.
The advantage of geostationary satellites is（）.
On-scene communications will normally take place between（）.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.