开模行程
参考答案:
是指从模具中取出塑件所需要的最小开合距离
从所给的四个选项中,选择最合适的一个填人问号处,使之呈现一定的规律性:()
A.A
B.B
C.C
D.D
The boy joins many clubs. He plays ______ violin and ______ baseball very well.[ ]
A. a, the
B. an, the
C. the, /
D. /, the