苦杏仁的净制方法为（）
A.去残茎
B.去残根
C.去皮壳
D.去毛
E.去心
参考答案：C
Which of the following is NOT a characteristic of an oligopoly（）
A. There are few sellers.
B. High barriers to entry.
C. Relatively small economies of scale.
军运号码（）表示重点物资运输。
A.851/71854
B.152/61781
C.52/61781
D.952/71116
