string(310) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%9C%9F%E5%BB%BA%E7%9B%91%E7%90%86%E6%95%99%E6%9D%90%E8%AF%BE%E5%90%8E%E6%80%9D%E8%80%83%E9%A2%98%E7%AD%94%E6%A1%88%E5%8F%8A%E8%A7%A3%E6%9E%90 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
土建监理教材课后思考题答案及解析
