string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E5%B8%82%E6%94%BF%E7%AB%A0%E8%8A%82%E9%A2%98%E5%BA%93%E6%9C%89%E5%A4%9A%E5%B0%91%E9%A2%98%E5%95%8A => Failed to connect to 101.89.143.195 port 38205: Connection refused"
二建市政章节题库有多少题啊
