1.

During the blasting method pressure range used for ferrous metals is

A. 0.4 KPa to 0.7 MPa
B. 0.4 MPa to 0.7 MPa
C. 70 KPa to 0.4 MPa
D. 0.4 KPa to 0.7 kPa
Answer» C. 70 KPa to 0.4 MPa


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