If keep the fuel injection of main engine unchanged when ship is fouled, that will cause IIfkeepthefuelinjectionofmainengineunchangedwhenshipisfouled,thatwillcauseIThespeedofmainenginetobereducedIIShipspeedtobereducedIIITheresistancetorqueofpropellertobeincreasedIVTrimatsterntoincrease、 A、I+II B、I~III C、I~IV D、I+II+IV