应具有专业技术职称,对企业经营药品的质量负领导责任,领导质量领导组织()
A.1500M2
B.1000M2
C.500M2
D.150M2
E.50M2
参考答案:A
填充抛射剂的方法主要有 __________ 和 __________ 两种。
Robert is said abroad, but I don’t know in which country he is.
A.have been studying
B.to have been studying
C.have studied
D.to have studied