单项选择题
A.reduce the fuel feeding of main engine of inner propeller
B.reduce the fuel feeding of main engine of outer propeller
C.firstly reduce the fuel of main engine of inner propeller, then reduce the fuel feeding of engine of outer propeller
D.reduce fuel feeding of two engines at the same time
单项选择题 If anything abnormal be found on the load change of main engine when the ship is entering in shallow waterway, before taking measuring the engineer on duty should （）
单项选择题 Generally, runaway means such situation when the speed main engine exceeds the rating speed by its （）
单项选择题 When ship navigating in rough sea, the first measure taken by the chief engineer to prevent the overload should be（）