对砂轮进行静平衡时,需要将平衡芯轴装入砂轮法兰盘锥孔中,并用涂色法检查其接触面积,使其必须大于()。
A.50%
B.60%
C.75%
D.80%
参考答案:C
Your education will ________ you to earn a good living. Work hard from now on. [ ]
A. associate
B. equip
C. relate
D. feed
手机中毒了,该怎么办?