药用植物、动物、矿物的药用部分采收后经产地初加工形成的原料药材是（）

A.中药材

B.中药饮片

C.中成药

D.民族药

Vessels must be（）valid certificate of nationality or certificated of registry or license.

A.acquiring

B.with possession of

C.required for

D.in possession of