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_______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 signal.

A. Which is assisted
B. That assists you
C. When you assisted
D. When being assisted

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In order to avoid all ships in a large sea area being alerted, which message format shall be selected by an operator?

Area call.
B. Distress call.
C. Urgency call.
DSC call.

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The ARQ mode should be applied___________.

A. when two stations communicate with each other
B. in any radio system at any time
C. when one ship sends messages to another
D. for communication Among some stations

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Which emission class may be used for RT in the bands between 4,000 kHz and 27,500kHz?

A. J3E.
B. G2B.
C. A1A.
D. F1B or J2B.

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Every ship _________on or after 1 February 1995 shall comply with all the applicable requirements of Chapter four.

A. constructs
B. constructed
C. has constructed
D. was constructed

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_______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 signal.

A. Which is assisted B. That assists you C. When you assisted D. When being assisted

In order to avoid all ships in a large sea area being alerted, which message format shall be selected by an operator?

The ARQ mode should be applied___________.

Which emission class may be used for RT in the bands between 4,000 kHz and 27,500kHz?

Every ship _________on or after 1 February 1995 shall comply with all the applicable requirements of Chapter four.

A. Which is assisted
B. That assists you
C. When you assisted
D. When being assisted