题干
.
After the new technique was introduced the factory produced cars in 1994 as the year before.
After the new technique was introduced the factory produced cars in 1994 as the year before.
A：as twice many
B：as many twice
C：twice as many
D：twice a
答案(点此获取答案解析）
C
酯中残留
的乙酸，加过量饱和Na2CO3溶液振荡后，静置分液