船舶離泊前的準備工作中,下列正確的是:() Ⅰ先吊起舷梯,后沖車Ⅱ檢查系纜情況Ⅲ制定離泊方案Ⅳ先備車,后單綁
A.Ⅰ~Ⅳ B.Ⅱ~Ⅳ C.Ⅱ、Ⅲ D.Ⅰ~Ⅲ
A.110% B.115% C.120% D.125%
A.小于30° B.大于30° C.大于40° D.小于40°