string(269) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E9%80%A0%E8%AE%A1%E4%BB%B7%E7%9C%9F%E9%A2%98%E7%AD%94%E6%A1%882021%E5%AE%8C%E6%95%B4%E7%89%88 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
一造计价真题答案2021完整版
