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单选题
对于给定的船舶,船速不变时,螺旋桨转数越低,则:()
A
滑失越大、推力越小、主机负荷越小
B
滑失越小、推力越大、主机负荷越小
C
滑失越大、推力越大、主机负荷越大
D
滑失越小、推力越小、主机负荷越小
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