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[单选题]
旋回圈是指船舶以固定的舵角和航速作()旋回时,船舶重心处所经过的轨迹。
A.360°
B.270°
C.180
D.90°
查看答案
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A.360°
B.270°
C.180
D.90°
A.(1)
B.(2)
C.(3)
D.(1)(2)(3)
A.方型系数大,即L/B的比值越小,旋回圈亦小
B.吃水增加,则旋回圈减小
C.船向低舷一侧旋回,其旋回直径将小于向高舷一侧旋回
D.船尾纵倾将使旋回圈增大
A.28 35°
B.60 30°
C.60 35°
D.28 30°
A.航向变动幅度小,航速快,可用小舵角
B.当船首指向线偏在航向的左面时,必须操右舵
C.首指向线偏在航向的右面时,必须操左舵
D.船首偏离航向,应操大舵角拨正航向
A.28S,35°,35°
B.28S,35°,30°
C.60S,35°,30°
D.60S,15°,15°