【单选题】S1: How long does it take to change the engines from ahead to astern? S2: It takes 30 seconds to change the engines from ahead to astern. Q: How long will it take to change the engines from ahead to a...
【简答题】S1:How long does it take to change the engines from ahead to astern?S2:It takes 30 seconds to change the engines from ahead to stern.Q:How long will it take to change the engines from ahead to aster...