ZYJ7及道岔转辙机检修，调整遮断器、自动开闭器接点：接点接触深度不小于（)

A.2.5mm

B.3mm

C.3.5mm

A.≥2mm

B.≥3mm

C.≥4mm

A.4

B.3.5

C.3

D.2.5

A.≥2mm

B.≥3mm

C.≥4mm

A.划痕

B.痕迹

C.烧痕

A.≥2mm

B.≥3mm

C.≥4mm

A.3mm

B.2mm

C.2.5mm

A.≥3mm

B.≥2mm

C.≥4mm

A.≤2mm

B.≤3.5mm

C.≤4mm

A.2mm

B.3mm

C.5mm