选择BT裸眼封隔器金属碗时,其外径应比井径小()mm。
A、3.25~6.35
B、6.35~12.7
C、12.7~18.6
D、18.6~25.7
参考答案:B
(2013·安徽蚌埠一次质检)So quickly ________ is a possibility today may be a reality tomorrow.
A.are science and technology advancing that
B.science and technology advancing are that
C.science and technology are advancing what that
D.are science and technology advancing that what
(1).苏子具有的功效是()(2).白果具有的功效是()(3).桑白皮具有的功效是 ()(4).麻黄具有的功效是()
A.泻肺平喘
B.宣肺平喘
C.降气平喘
D.敛肺平喘