通过常规管理足以保证其安全性、有效性的医疗器械是
A．药品注册时限B．国家药品标准C．药品注册标准D．新药技术转让E．药品注册检验
参考答案：B
Mum, I was wondering if you could lend me a few dollars until I ______ on Friday.
A．get paid
B．got paid
C．have paid
D．had been paid
人防隧道属于（）。
A.交通隧道
B.水工隧道
C.市政隧道
D.矿山隧道
