砂轮粒度和砂轮的修整。磨粒越细,砂轮单位面积上的磨粒越多,表面粗糙度值越()。修正砂轮,使砂轮有正确的几何形状和锋利的微刃。用金刚石笔修正砂轮时注意纵向进给量。
参考答案:小
Your project is very critical for the company and must be completed within 6 months. The project charter has been signed, but scope statement is not yet prepared. Management asks you to go ahead with the project without the scope statement being approved. What should you do(select the best answer)
A.Refuse to work on the project because management is not following standard project management practice
B.Since time is of essence, you should start the project with the inputs from project charte
C.Meet the management and mention the problems you will face without a scope statemen
D.Escalate the issue to the project sponsor and issue a risk mem
估计网络系统将来带来的效益所应用的方法不包括()
A.投资回收期
B.纯收入
C.成本估计
D.投资回收