A.2mm B.3mm C.5mm D.8mm
A.對(duì)角2只M16~M20的膨脹螺栓 B.4只M10~M12的膨脹螺栓 C.4只M8~M10的膨脹螺栓 D.對(duì)角2只M8~M10的膨脹螺栓
A.5mm B.100mm C.50mm D.60mm