单项选择题
A.fuel oil only
B.crude oil only
C.liquefied petroleum gas
D.petroleum oil of any kind
单项选择题 Which of the actions listed should be taken by the engineer on watch when the general alarm is sounded continuously for 10 seconds?（）
单项选择题 When the general alarm is sounded continuously, the engine room personnel should （）.
单项选择题 Which of the following actions should be taken by the engine room watch when the general alarm is sounded continuously?（）