A、ahead and equal to the ship's speed
B、astern and equal to the ship's speed
C、ahead and equal to twice the ship's speed
D、astern and equal to twice the ship's speed
更多“The apparent wind can be zero when the true wind is from（）.”相关的问题
A、apparent wind speed only B、true wind speed and true wind direction C、true wind speed only D、apparent wind speed and true wind direction
A、A.stopped with the wind dead ahead B、B.stopped with the wind on the beam C、C.underway with the wind 30°on the bow D、D.underway on a course to provide no apparent wind
A、A.the direction of the true wind B、B.true north C、C.the beam on the windward side D、D.the beam on the lee side
A、Downwind so that the apparent wind is close to nil B、A course that will keep a free flow of air，clear of smoke，over the hoist area C、A course that will have the hoist area in the lee of the superstructure D、With the wind dead ahead because the helicopter is more maneuverable when going into the wind
A、A.must be from dead ahead B、B.speed must be zero C、C.must be from dead astern D、D.must be on the beam
A、Should the engine stop without apparent reason B、The engine should stop without apparent reason C、The engine stops without apparent reason D、The engine is stopped without apparent reason
A、The vessel should be stopped with the wind dead ahead during the hoisting operation B、Flags should be flown to provide a visual reference as to the direction of the apparent wind C、The drop line should be grounded first then secured as close to the hoist point as possible D、The hoist area should be located as far aft as possible so the pilot will have a visual reference while approaching
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