string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E4%B8%80%E5%BB%BA%E8%80%83%E8%AF%95%E7%9C%9F%E9%A2%98%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
2021一建考试真题答案
