單項(xiàng)選擇題

The Consol navigation system，used in Russian and Northern European waters，can be used（）.

A.for precise navigation in coastal waters
B.by measuring the phase difference of the dots and dashes
C.as an aid to ocean navigation
D.if the vessel is fitted with a special Consol receiver

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單項(xiàng)選擇題

The Class A EPIRB transmits a signal（）.

A.that follows the curvature of the earth
B.that can be picked up by SARSAT satellite
C.that activates an alarm on board nearby aircraft
D.to alert shore stations and then transmits a homing signal

單項(xiàng)選擇題

Survival craft EPIRBs (Class S) are（）.

A.permanently mounted in the survival craft
B.portable and stowed for carriage to the survival craft
C.permanently mounted on the bridge wings
D.portable and stowed in the emergency gear locker

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The Consol navigation system，used in Russian and Northern European waters，can be used（）.

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The Class A EPIRB transmits a signal（）.

Survival craft EPIRBs (Class S) are（）.

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The Consol navigation system，used in Russian and Northern European waters，can be used（）.