单项选择题
For vessels with （）, the meaning of the order would include the combination of pitch and revolutions as indicated in ships orders.
A.fixed pitch propellers B.uncontrollable pitch propeller C.constant pitch propellers D.variable pitch propellers
单项选择题 The order “Bow thrust stop” means “（）”.
单项选择题 “Movement of engine no longer required” means “（）”.
单项选择题 The order “（）” means “Maximum maneuvering engine revolution for ahead propulsion”.
