为保证机床主轴中心高与尾座顶尖中心高的同轴度精度，应选择哪一种装配方法（ ）。
参考答案：修配装配法
---What does he want to do after he finishes middle school?
---He has made up his mind to join the army rather than______ to college.
A．go
B．going
C．went
D．goes
引起 * * 内陷的乳腺疾病是（）。
A.乳腺纤维腺癌
B.乳腺囊性增生病
C.乳管内 * * 状瘤
D.乳腺癌
E.急性乳腺炎
