车削工件材料为中碳钢的普通内螺纹,计算孔径尺寸的近似公式为______。
A.D孔=d-P
B.D孔=d-1.05P
C.D孔=d-1.0825P
参考答案:A
----Shall we go and see a movie this Sunday?
---_______.
A.Don’t flatter yourself
B.I don’t agree
C.Why do you think so?
D.That’s an excellent idea.
对于符合工业要求的吸附剂有哪些要求?