在采取适当的工艺保证后,数控线切割也可以加工盲孔。
参考答案:错
电离电荷在下述什么物质中易被收集起来
A.骨骼B.气体C.肌肉D.肠管E.体液
Administrative closure should not be delayed until project completion because ().
A.useful information may be lost
B.the project manager may be reassigned
C.project team members may be reassigned by that time
D.sellers are anxious for payments