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Using the four functions as your guide, what challenges would Jeff Bourk face in managing the Branson Airport？

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棕绳与白麻绳相比，强度低，易磨损，受大气影响。

Would you want to work for a company like this？ Why or why not？

起重作业中，当轮槽壁磨损量达到原厚度的10%及径向磨损量达到绳直径的25%时，均要检修或更换滑轮。

白麻绳和棕绳普遍用于辅助作业和吊装小于500kg的重物，应用比较广泛。