206.ZD9转辙机自动开闭器动接点与静接点座间隙不小于()。[333010204]

206.ZD9转辙机自动开闭器动接点与静接点座间隙不小于()。[333010204]

A.(A)1mm

B.(B)2mm

C.(C)3mm

D.(D)4mm

正确答案是C