For a ship not on an international voyage,an approved substitute for an impulse projected rocket-type line throwing appliance is a().
A. spring loaded line thrower
B. hand thrown buoyant line
C. shoulder-type line throwing gun
D. heaving line
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有限合伙人转变为普通合伙人的,对其作为有限合伙人期间有限合伙企业发生的债务,以其认缴的出资额为限承担责任。
A. 正确
B. 错误
换装或搬运钢轨、混凝土枕、辙叉等笨重轨料应注意什么?