单项选择题
The purpose of a devil’s claw is to（）.
A.act as a chain stopper B.prevent the windlass from engaging C.prevent the chain from fouling on deck D.control the wildcat
单项选择题 The only wire rope termination which may be made in the field is（）.
单项选择题 The main function of the core of a wire rope is to（）.
单项选择题 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?（）.
