在结构设计方面应尽量选用直径较()的摩擦轮,这样可()压紧力和提高传动效率。
参考答案:大;减小
近代民间筝曲流派
The new group of students is better-behaved than the other group who stayed here ________.
A.early
B.earlier
C.earliest
D.the earliest