焊炬不许沾染油脂,以防氧气遇到油脂() A.发热 B.燃烧 C.温度升高 D.爆炸 发布时间:2017-08-23 22:26 │ 来源:www.tikuol.com 题型:多项选择题 问题: 焊炬不许沾染油脂,以防氧气遇到油脂()A.发热B.燃烧C.温度升高D.爆炸
题型:多项选择题 With the address I had no ______ in finding Mr. White’s house.A.troublesB.mistakesC.difficultyD.difficulties、 查看答案