单项选择题
A.settling in a fuel tank
B.testing in a laboratory centrifuge
C.burning in a calorimeter
D.testing in a closed cup
单项选择题 If your vessel bums 8 tons of fuel per hour at 15 knots, how many tons per hour will it burn at 18 knots?（）
单项选择题 Which of the following statements is correct concerning the “flash point ” of a liquid?（）
单项选择题 Sludge may form in the crankcase of an air conditioning compressor as a result of （）.