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
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For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
COSPAS-SARSAT is intended to be used for（）.
The advantage of geostationary satellites is（）.
Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
By using（）system a ship can send a distress message and know with certainty it will be received.
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.
The rescue coordination center may（）on stations which interfere with traffic.
（）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.