单项选择题
An oxygen indicator will detect （）.
A.concentrations of explosive gas
B.an oxygen deficiency in a space
C.the presence of harmful amounts of carbon monoxide
D.All of the above
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相关考题
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单项选择题
The term "oily mixture", as defined in the Pollution Prevention Regulations includes （）.
A.sludge
B.oily ballast water
C.bilge slops
D.All of the above -
单项选择题
The term "oil", as used in the Pollution Prevention Regulations, means （）.
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?（）
A.Engine room ventilation should be started
B.Main engines should be secured
C.The fire pump should be started
D.The fixed CO2 system should be activated
