单项选择题
Why is it important for fuel oil tanks not to be topped off at the inner bottom level when loading on a cold day?（）
A.Increased viscosity of the product needs higher loading pressure, which increases the chances of a spill
B.Air pockets may cause the fuel to bubble out of the ullage hole
C.The temperature rise of the fuel will cause an overflow
D.Fueling valve may become stuck closed and cause the fuel oil to spill before the valve can be opened
相关考题
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单项选择题
In order to release CO2 to the machinery spaces from a fixed fire extinguishing system, you must（）.
A.actuate an alarm and open the engine room control valve
B.actuate an alarm and open the engine room CO2 releasing valve
C.open the engine room control valve and shut off engine room ventilation fans
D.open the engine room control valve and then the CO2 releasing valve -
单项选择题
To prevent the overflow of cargo tanks due to expansion, you should top off （）.
A.to the bottom of the expansion trunk
B.to within 1% to 3% of its capacity
C.to within 1% to 3% inches of its capacity
D.1 to 3 inches from top of the vent pipe -
单项选择题
After taking on fuel oil, the hoses should be disconnected and （）.
A.draped over the fantail to dry out
B.drained over the side and washed out
C.drained into the bilges and washed out
D.drained into buckets or fuel tanks
