单项选择题
A.Class "A" and class "B" B.Class "B" and class "C" C.Class "A" and class " C" D.Class "C", class "D", and class "E"
Most lifeboats are equipped with （）.A.unbalanced rudder...
单项选择题Most lifeboats are equipped with （）.
A.unbalanced rudders B.balanced rudders C.contraguide rudders D.straight rudders
While reading the station bill, you find "three (3) sho...
单项选择题While reading the station bill, you find "three (3) short blasts on the whistle and three (3) short tings on the general alarm bells," this signal is for （）.
A.abandon ship B.dismissal from fire and emergency stations C.fire and emergency D.man overboard
Hydrocarbon vapors are usually detected by the use of t...
单项选择题Hydrocarbon vapors are usually detected by the use of the （）.
A.flame safety lamp B.combustible gas indicator C.gasometer D.oxygen indicator
