單項選擇題If the overflow tank high-level alarm sounds while the fuel oil tanks are being topped off, the engineer should （）.

A.close the static leg filling valve
B.close the overflow tank falling valve
C.reduce the fuel oil pumping rate
D.stop the fuel oil pumping operation


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1.單項選擇題After fuel tanks have been topped off, which of the listed procedures should be followed next?（）

A.The pressure-vacuum relief valve should be reset
B.The tanks should be made seaworthy to prevent contamination
C.The tanks should be sounded to make sure the levels are not rising
D.The tanks should be marked with a bull stamp on the manifold filling valve

2.單項選擇題The most critical part of the bunkering operations, which can result in an oil spill, is when the （）

A.hose joints are made up
B.tanks are being topped off
C.system is being lined up
D.pumping operation is first started

3.單項選擇題During fueling operations, which of the listed precautions should be taken when topping off fuel tanks?（）

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

4.單項選擇題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

5.單項選擇題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