对刀具寿命影响最大的是()。
A、切削深度
B、进给量
C、切削速度
参考答案:C
---How are you with your new classmates?
---We often help each other.
A.getting along well
B.got along
C.getting along
D.got along well
下列不属于人力资源需求预测的是( )
A.现实人力资源预测
B.未来人力资源预测
C.未来流失人力资源预测
D.未来人力资源供应预测