string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B7%A5%E7%A8%8B%E7%9B%91%E7%90%86%E5%BA%94%E7%9F%A5%E5%BA%94%E4%BC%9A => Failed to connect to 101.89.159.206 port 38075: Connection refused"
工程监理应知应会
