string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%85%AC%E8%B7%AF%E4%B8%80%E7%BA%A7%E5%BB%BA%E9%80%A0%E5%B8%88%E8%AF%95%E9%A2%98%E5%8F%8A%E7%AD%94%E6%A1%88 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
公路一级建造师试题及答案
