單項(xiàng)選擇題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


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1.單項(xiàng)選擇題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

2.單項(xiàng)選擇題In determining safe speed，the Rules list all of the following as factors which must be taken into account EXCEPT the（）.

A.limitations of radar equipment
B.presence of background lights at night
C.maximum horsepower of your vessel
D.maneuverability of your vessel

3.單項(xiàng)選擇題In determining if risk of collision exists the following considerations shall be among（）.

A.these taken into calculation
B.those taking into account
C.that taken into account
D.those taken into account

4.單項(xiàng)選擇題In a crossing situation on open waters，a sailing vessel shall keep out of the way of all the following vessels EXCEPT a vessel（）.

A.not under command
B.restricted in her ability to maneuver
C.engaged in towing
D.fishing

5.單項(xiàng)選擇題If your vessel is underway in fog and you hear one prolonged and three short blasts，this is a （）.

A.vessel not under command
B.sailing vessel
C.vessel being towed (manned)
D.vessel being towed (unmanned)