单项选择题
A.1Cr18Ni9Ti B.0Cr18Ni9 C.Cr18Ni11Nb D.1Cr17Ni7
A.0Cr18Ni9 B.1Cr18Ni9Ti C.1Cr17Ni7 D.Cr18Ni11Nb
A.SUS410 B.SUS304 C.SUS430 D.SUS329