string(268) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E5%8D%8E%E9%AA%8F%E6%8D%B7fsv%E6%B2%B9%E8%80%97%E9%AB%98%E4%BB%80%E4%B9%88%E5%8E%9F%E5%9B%A0 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
中华骏捷fsv油耗高什么原因
