机加工中获得尺寸精度的方法有______、______、______和______等。
参考答案：试切法；定尺寸刀具法；调整法；自动控制法
全腹膨隆见于（）
A.腹内积气
B.巨大卵巢囊肿
C.大量腹水
D.足月妊娠
E.肥胖
---Tom hasn’t turned up yet. He might have got lost.
----No, he ________. His car has got a GPS. [ ]
A. must not have got lost
B. wouldn’t have got lost
C. can’t have got lost
D. shouldn’t have got lost
