对孔的粗糙度影响较大的是（）。
A.切削速度
B.钻头刚度
C.钻头顶角落
D.进给量
参考答案：D
下面词语中错别字最少的一项是
A．荣膺萌孽寒喧残羹冷灸气息惙然
B．罪愆编攥元霄杯盘狼籍委屈求全
C．国粹真缔沤气不容置喙嘻笑怒骂
D．酒蛊愀然觇视变本加利坚苦卓绝
The poor boy was ________ by his grandparents. [ ]
A. brought forward
B. brought in
C. brought up
D. brought about
