A.inspecting
B.inspected
C.inspects
D.having inspected
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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
A.cannot
B.are not allowed
C.have the right
D.should get permission to
A.every two years
B.every three years
C.every year
D.every four years
最新試題
On-scene communications will normally take place between（）.
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.
The advantage of geostationary satellites is（）.
International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.
（）will form the basis for distress alerting and safety calling.
What following is not among the function of SOLAS ships?（）
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
Ship-to-ship distress alerting should be conducted by（）.
Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.