单项选择题
A.Reduce the pumping rate by closing the deck filling valve
B.Close all overflow valves
C.Place 5 gallon containers under all flange connections in the fuel line
D.Reduce the pumping rate and sound tanks frequently as the level rises
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?（）
单项选择题 In order to release CO2 to the machinery spaces from a fixed fire extinguishing system, you must（）.
单项选择题 To prevent the overflow of cargo tanks due to expansion, you should top off （）.