某一单边制程（USLOnly),USL=0.60μ=0.5802.0=Rd2=1.69,求其西格玛水平:A.1.69B.3.19C.1.42D.1.

某一单边制程(USLOnly),USL=0.60μ=0.5802.0=Rd2=1.69,求其西格玛水平:

A.1.69

B.3.19

C.1.42

D.1.57