苦杏仁苷属于()
A.醇苷
B.酯苷
C.酚苷
D.氰苷
E.吲哚苷
参考答案:D
Mum is coming. What present for your birthday?
A.you expect she has got
B.you expect has she got
C.do you expect she has got
D.do you expect has she got
右转螺旋桨飞机,当操纵飞机向右转弯时,进动力矩使飞机向().
A.上转动
B.下转动
C.右转动