string(248) "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%BB%BA%E9%80%A0%E5%B8%88%E8%AF%95%E9%A2%98%E6%A8%A1%E6%8B%9F => Failed to connect to 101.91.112.32 port 38162: Connection refused"
二建建造师试题模拟
