string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E5%AE%9E%E5%8A%A1%E6%95%99%E6%9D%90%E7%94%B5%E5%AD%90%E7%89%88%E6%89%AB%E6%8F%8F => Failed to connect to 14.18.117.71 port 38069: Connection refused"
一建实务教材电子版扫描
