What are the lines in a section view used to show where the material is cut called? A. cutting plane lines B. section lines C. object lines D. hidden lines
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【单选题】( )is the rate at which energy is used up in maintaining basal metabolism.