单项选择题
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
单项选择题 During fueling operations, which of the listed precautions should be taken when topping off fuel tanks?（）
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（）.