單項(xiàng)選擇題

Approaching an 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

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單項(xiàng)選擇題

An occulting light is one in which（）.

A.the period of darkness exceeds the period of light
B.there is only a partial eclipse of the light
C.the periods of light and darkness are equal
D.the period of light exceeds the period of darkness

單項(xiàng)選擇題

An inconspicuous，partly submerged vessel or object being towed，where the length of tow is 100 meters，shall show（）.

A.yellow lights at each end
B.two red lights in a vertical line
C.a black ball
D.a diamond shape

Approaching an anchorage in fog，you hear one short，one prolonged，and one short blast in that sequence on a ship’s whistle． This indicates（）.

你可能感興趣的試題

An occulting light is one in which（）.

An inconspicuous，partly submerged vessel or object being towed，where the length of tow is 100 meters，shall show（）.

Approaching an anchorage in fog，you hear one short，one prolonged，and one short blast in that sequence on a ship’s whistle． This indicates（）.

An inconspicuous，partly submerged vessel or object being towed，where the length of tow is 100 meters，shall show（）.