来源于多孔菌科,药用菌核的药材是()
A.灵芝
B.茯苓
C.肉豆蔻
D.猪苓
E.马勃
参考答案:B, D
—Are you sure you can do well in today's test?
—_____. I've got everything ready.
A. It's hard to say
B. I'm afraid not
C. I think so
D. I hope not
()是财产保险纯费率的计算依据。
A.利率
B.保额损失率
C.财产损失率
D.营业费率