We shall appreciate it if you will effect shipment as soon as possible, thus ( ) our buyers to catch the brisk demand at the beginning of the season. A.
enable B.
enabling C.
enables D.
enabled

A． B． C． D．

单项选择题

A．
B．
C．
D．

经代谢转变可生成γ一氨基丁酸的氨基酸是( )A.TyrB.HisC.CysD.Glu

单项选择题经代谢转变可生成γ一氨基丁酸的氨基酸是( )

关于结构抗震概念设计和抗震计算的说法正确的有

多项选择题关于结构抗震概念设计和抗震计算的说法正确的有