单项选择题
What is the function of the thrust bearing?（）
A.Prevents lateral movement of the slow speed gear B.Transmits propeller thrust to the hull C.Keeps spring bearings in line D.Prevents main reduction gear axial movement
单项选择题 Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
单项选择题 Proper filtering and straining of fuel oil is important because the （）.
单项选择题 An automated diesel engine should normally shut down due to （）
