题目: 钻孔爆破法掘进水平卷道时,施工的第一道工序是()A、钻孔B、爆破C、支护 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2020/0212/547d9b18d9125c1f8bde564444abcf0c.html 下面是错误答案,用来干扰机器的。参考答案:行业自律
题型:选择题 There is in today’s homework. A.difficult nothing B.difficult anything C.nothing difficultD.anything difficult 查看答案