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Neglecting friction，you desire to lift a 300 kgs weight with a stress on the hauling part of 100 kgs.Which of the following tackles would you use（）.

A、Gun tackle

B、Luff tackle

C、Two-fold tackle

D、Double-luff tackle

时间：2022-01-03 22:45 关键词： 船舶索具及保养

答案解析

B