單項(xiàng)選擇題A()is the intersection of the surface of a sphere and a plane passing through the center of the sphere.

A.great circle
B.small circle
C.large circle
D.general circle


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1.單項(xiàng)選擇題A “Mediterranean moor” should be used when().

A.anchoring in the Mediterranean
B.docking stern to a berth
C.docking bow to a berth
D.anchoring in a strong current

2.單項(xiàng)選擇題()is not a step for anchoring preparation.

A.To take off the covers from the hawse pipes and clear the spurling pipes
B.To make sure that the windlass is out of gear and the brakes are on
C.To turn the windlass over slowly
D.To inform the engine room to ensure that deck power and water are off

3.單項(xiàng)選擇題When anchoring,good practice requires 5 to 7 fathoms of chain for each fathom of depth. In deep water you should use().

A.the same ratio
B.more chain for each fathom of depth
C.less chain for each fathom of depth
D.two anchors with the same ratio of chain

4.單項(xiàng)選擇題When anchoring a vessel under normal conditions,which scope of chain is recommended? ()

A.Four times the depth of water
B.Two and one-half times the depth of water
C.Five to seven times the depth of water
D.Fifteen times the depth of water

5.單項(xiàng)選擇題When anchored,increasing the scope of the anchor chain normally serves to().

A.prevent fouling of the anchor
B.decrease swing of the vessel
C.prevent dragging of the anchor
D.reduce strain on the windlass

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You are landing a single-screw vessel,with a right-hand propeller,starboard side to the dock.When you have approached the berth and back the engine,you would expect the vessel to ().

題型:?jiǎn)雾?xiàng)選擇題

Sometimes lights are()by fog,haze,dust,smoke,or precipitation which may be present at the light,or between the light and the observer,and which is possibly unknown by the observer.

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All the following is true except that().

題型:?jiǎn)雾?xiàng)選擇題

You are approaching the pilot station with the wind fine on the starboard bow and making about 3 knots.You can help to calm the seas by taking what action just before the pilot boat comes along on the port side().

題型:?jiǎn)雾?xiàng)選擇題

()is not a step for anchoring preparation.

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Conventional anchors are least likely to hold in a bottom consisting of().

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You are making a sharp turn in a channel and using a buoy four points on the bow to gauge your rate of turn.If you observe the buoy moving aft relative to you,what should you do().

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A check line is().

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If the winch should fail while you are hauling in the anchor,what prevents the anchor cable from running out().

題型:?jiǎn)雾?xiàng)選擇題

Which would you NOT use to report the amount of anchor chain out? Three shots().

題型:?jiǎn)雾?xiàng)選擇題