A:过滤
B:蒸馏
C:分液
D:萃取
英国资产阶级革命的领导阶级是( )
如图:在等腰梯形ABCD中,AD∥BC,过D作DF⊥BC于F,若AD=2,BC=4,DF=2,则DC的长为( )
成语“吐故纳新”“取其精华,去其糟粕”包含的共同哲学道理是( )
— Could you please tell me ________?
— Of course. Many people in Wuwei know it.