A.If
B.Whenever
C.Because
D.Where
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A.transmit
B.to transmitting
C.transmitting
D.in transmitting
A.inspecting
B.inspected
C.inspects
D.having inspected
A.coming into effect
B.moving to full effect
C.being based on force
D.coming into force
A.fixed
B.matched
C.fitted
D.equal
A.square
B.triangle
C.circle
D.rectangle
最新試題
The vessel has stayed in port for seven days because she needs（）.
All coast radio stations（）DSC installed for VHF and HF.
Radio communication（）for many years and helps to save tens of thousands of lives.
The rescue coordination center may（）on stations which interfere with traffic.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
COSPAS-SARSAT is intended to be used for（）.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.