23.用管子滚动搬运应遵守哪些规定?
["c)\u4e0a\u5761\u65f6\u5e94\u7528\u6728\u6954\u57ab\u7262\u7ba1\u5b50\uff0c\u4ee5\u9632\u7ba1\u5b50\u6eda\u4e0b\uff1b\u540c\u65f6\uff0c\u65e0\u8bba\u4e0a\u5761\u3001\u4e0b\u5761\uff0c\u5747\u5e94\u5bf9\u91cd\u7269\u91c7\u53d6\u9632\u6b62\u4e0b\u6ed1\u7684\u63aa\u65bd\u3002"]