耐蚀(酸)非金属材料,除具备良好的耐蚀性能外,还具有的性能为()。A.耐急冷、急热性 发布时间:2017-12-11 17:40 │ 来源:www.tikuol.com 题型:单项选择题 问题: 耐蚀(酸)非金属材料,除具备良好的耐蚀性能外,还具有的性能为()。A.耐急冷、急热性能B.较好的耐冲击性能C.良好的耐磨性能D.优良的热处理性能
题型:单项选择题 Tom sits ____ the classroom while John sits ____ the room. [ ]A. in front of; at back of B. in the front of; at the back of C. in front of; at the back of D. in the front of; at back of 查看答案