混合瘤好发部位为
A.颁下腺
B.舌下腺
C.腮腺
D.腭部小涎腺
E.口腔其他部位小涎腺
参考答案:C
Goods that are stored in warehouse for sales delivery are called().
A.cargos
B.inventory
C.materials
D.freights
简述正当防卫与紧急避险的区别。