差错登记制度是为了
A.SDA.B.BP.C.JP.D.USP.E.WHO.
参考答案:A
何种皮片移植成活后收缩最少()。
A.刃厚皮片
B.薄断层皮片
C.一般中厚皮片
D.厚中厚皮片
E.全厚皮片
History is( ) a subject that only lets us know something in history; it also tells us a lot of truth.
A.less than B.more thanC.no more than D.not more than