A、excessive loads are placed on the winch B、minimum pull is being exerted by the winch C、automatic operation of the winch is desired D、wire is being retrieved at the maximum rate
A、涂色 B、颜色 C、标志
A、封皮上写明“贵重物品”字样 B、封皮上标有“↑”标志 C、封皮上写明“不能倒置”字样 D、封皮上写明“不能侧置”字样
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