A、secure the engine room ventilation
B、secure the machinery in the engine room
C、evacuate all engine room personnel
D、All of the above
更多“Before using a fixed CO<sub>2</sub> system to fight an engine room fire，you must（）.”相关的问题
A、secure the engine room ventilation B、secure the machinery in the engine room C、evacuate all engine room personnel D、ALL of the above
A、Closer to the coast B、Farther from the coast C、On the track line ahead of the fix D、On the track line behind the fix
A、should never use radar bearings B、should only use radar bearings when the range exceeds the distance to the horizon C、can use radar information from one object to fix the position D、must use information from targets forward of the beam
A、can use radar information from one object to fix the position B、should never use radar bearings C、should only use radar bearings when the range exceeds the distance to the horizon D、must use information from targets forward of the beam
A、A.only if fixed containment is not used B、B.only if portable containment is not used C、C.only if fixed containment drains are open D、D.whenever the vessel is being bunkered
A、the best fix is obtained by using a tangent bearing and a range B、and using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearings C、and using ranges，the most rapidly changing range should be measured last D、and crossing a radar range of one object with the visual bearing of a second object，the two objects should be 80°to 110°apart
A、Minimum speed estimate B、Maximum speed estimate C、Average speed estimate D、A running fix should not be used under these conditions
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