string(354) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E7%BA%A7%E5%BB%BA%E9%80%A0%E5%B8%88%E8%80%83%E8%AF%95%E6%A1%88%E4%BE%8B%E9%A2%98%E6%9C%89%E7%AD%94%E6%A1%88%E8%BF%98%E8%A6%81%E5%86%99%E8%BF%9B%E5%8E%BB%E5%90%97%E7%9F%A5%E4%B9%8E => Failed to connect to 14.18.46.51 port 38044: Connection refused"
一级建造师考试案例题有答案还要写进去吗知乎
