请在 下方输入 要搜索的题目:

In various modes of transportation, the proportion of loading and unloading and handling costs of railway transportation and waterway transportation in freight is relatively high.


A、正确;
B、错误

发布时间:2025-10-28 13:55:39
推荐参考答案 ( 由 题搜搜 官方老师解答 )
答案:正确
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