减速器箱体加工过程分为平面加工和()两个阶段。
A.侧面与轴承孔
B.底面
C.连接孔
D.定位孔
参考答案:A
—What do you think of Thomas?
—Well, he is good, warm-hearted, hard-working and intelligent; _______, I can’t speak too highly of him.
A.in a word
B.as a result
C.by the way
D.on the contrary
关于边角混合网的形式,错误的是( )。
A.GPS网 B.三角网 C.三边网 D.导线网