We can control the reaction process even we cannot measure the parameters of chemical reaction()
The goal of green chemistry is to treat the environmental pollutions already generated in chemical reactions()
Traditional pollution treatment can provide a permanent cure()
坐骨结节间径7cm,后矢状径7cm,足月分娩应采取何种分娩方式()
A. 剖宫产
B. 产钳术
C. 胎头吸引
D. 会阴侧切
E. 自然分娩