Approaching a anchorage in fog, you hear one short, one prolonged, and one short blast in that sequence on a ship’s whistle. This indicates ______.
A.A vessel towed
B.A vessel not under command and unable to maneuver.
C.A vessel anchored giving warning of her position.
D.A vessel stopped dead in the water.
正确答案：C
在雾中接近锚地你听到它船连续一长一短一长的雾号着说明一个锚泊船警告来船注意它的存在
