按照药品管理法的规定,研究的新药实行()
A.进货检查验收制度
B.经济核算制度
C.药品试用制度
D.药品审批制度
E.专家论证制度
参考答案:D
He _____ in the exam. The teacher_____think he _____ his best. [ ]
A. failed, didn't, did
B. failed, /, didn't
C. fails, didn't, do
D. failed, /, did
下述材料中,可用于各种铸造修复体熔模的常用表面清洗剂是()
A.蒸馏水
B.酒精
C.自来水
D.汽油
E.防腐剂