30107 Q1:( ) A. The main engine lube oil pipe is leaking. B. The main engine fuel oil pipe is leaking. C. The main engine lube oil cooler may be broken internally. D. The main engine lube oil cooler may be broken externally. Q2:( ) A. 15 minutes. B. 45 minutes. C. 60 minutes. D. 75 minutes. Q3:( ) A. 15 minutes later. B. 45 minutes later. C. 60 minutes later. D. 75 minutes later. Q4:( ) A. The main channel. B. The clear water. C. The anchorage. D. The harbor.