單項選擇題Approximately what percent of tank space should be left for expansion of oil due to possible temperature increase?（）
A.1% to 3%
B.1% to 2%
C.4%
D.2% to 4%
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1.單項選擇題To avoid excessive surge pressure when bunkering, you should （）
A.bunker at a normal rate
B.check for kinks in hose
C.close valves slowly
D.shut valves before topping off
2.單項選擇題When is the most critical time of bunkering in regards to oil pollution?（）
A.lining up the systems
B.topping off
C.starting delivery
D.connecting hoses and joints
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