磨削加工具有哪些特点？
参考答案：
（1）加工精度高且表面粗糙度小；（2）径向分力大；（3）磨削温度高；（4）砂轮有自锁性。
If he hadn't gone to the library, he _____ of stealing the book. [ ]
A. wouldn't have suspected
B. wouldn't suspect
C. wouldn't have been suspected
D. wouldn't be suspected
稽核人员必须是中专以上学历。
