501.ZPW-2000A无绝缘轨道电路防护盒边缘距钢轨内侧不得小于()。[312030205]

501.ZPW-2000A无绝缘轨道电路防护盒边缘距钢轨内侧不得小于()。[312030205]

A.(A)1300mm

B.(B)1400mm

C.(C)1500mm

D.(D)1600mm

正确答案是C