1.

The necessary diameter (d) for thickness of plates (t) is ______

A. d = 6*‚àöt
B. d =4*‚àöt
C. d =6*‚àö2t
D. d =4*‚àö2t
Answer» B. d =4*‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇt


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