转K6、转K1型和C76B型车装用的25t轴重转向架、转E22型承载鞍支承面偏磨大于()时加工,恢复原型。
A.0.5mm
B.1mm
C.1.5mm
D.2mm
参考答案:B
I didn’t quite follow you. What was it ____ you just said about the subject?
A.what
B.which
C.that
D.how
清管球与管道的密封接触面比较宽,不容易造成失密停滞。