单项选择题

In order to maintain speed while changing course from a close reach to a broad reach，the sails should be（）.

A.lowered
B.reefed
C.hauled in
D.eased out

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单项选择题

In order for a vessel to be engaged in fishing she must be（）.

A.underway
B.using gear which extends more than 50 meters outboard
C.using a seine of some type
D.using gear which restricts her maneuverability

单项选择题

In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should（）.

A.stop your engines
B.sound the danger signal at two-minute intervals
C.hold course and speed until the other vessel is sighted
D.take avoiding action as soon as possible