冲裁过程中落料件的外形尺寸等于凸模尺寸，冲孔件孔的尺寸等于凹模尺寸。（）
参考答案：错
Who do you think the teacher will ______ the question?
A．have answer
B．have answered
C．have to answer
D．has answered
GGH吹扫装置有几种吹扫方式？
