string(280) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%B9%B4%E7%9B%91%E7%90%86%E5%9C%9F%E5%BB%BA%E6%A1%88%E4%BE%8B%E5%BF%85%E5%A4%87%E7%9F%A5%E8%AF%86%E7%82%B9 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
2021年监理土建案例必备知识点
