输血按血液的成分分为()
A、自体输血
B、全血输血
C、成分输血
D、输浓缩红细胞
E、输血小板
参考答案:B, C
The difficulty which we had _______ with the local people has now been removed.
A.communication
B.to communicate
C.communicated
D.communicating
药材取样法规定
药材总包件数在100~1000件的()
A.按1%取样
B.按3%取样
C.按5%取样
D.取样5件
E.逐件取样