船舶主机换向,从前进三到后退三约需时间为( )。
(A)蒸汽机船60~90s,汽轮机船90~120s,内燃机船120~180s
(B)内燃机船60~90s,蒸汽机船90~120s,汽轮机船120~180s
(C)汽轮机船60~90s,蒸汽机船120~180s,内燃机船90~120s
(D)蒸汽机船60~90s,内燃机船90~120s,汽轮机船120~180s
参考答案
继续答题:下一题
(A)蒸汽机船60~90s,汽轮机船90~120s,内燃机船120~180s
(B)内燃机船60~90s,蒸汽机船90~120s,汽轮机船120~180s
(C)汽轮机船60~90s,蒸汽机船120~180s,内燃机船90~120s
(D)蒸汽机船60~90s,内燃机船90~120s,汽轮机船120~180s