【简答题】I asked the p___ department for a report.
【多选题】刀具材料必须具备哪些性能?常用的刀具材料有哪些?( )
A.
高的硬度和耐磨性 常用刀具材料有:碳素工具钢、合金工具刀、高速钢车刀、硬质合金刀
【简答题】The question I am asked most often like I travel around the world springs from 【M1】______ people's deepest fear: 'Jane, do you think there is hope?' Is there hope for the rain forests of Africa? For t...
【单选题】I wasn't at home yesterday. I ____ to help with the harvest on the farm. [ ]