QB/T2474-2000标准中方舌、钩舌的伸出长度应符合()
A:双舌、钩舌≥12.5mm,双舌(钢门)9mm,单舌12mm
B:双舌≥12.5mm,双舌9mm,单舌12mm
C:双舌≥11mm,双舌(钢门)9mm,单舌12mm
D:双舌≥12.5mm,双舌(钢门)9mm,单舌10mm
出自:质量知识竞赛