（）就是装配尺寸链所包含的组成环数目最少。
参考答案：尺寸链最短原则
I need to call my friend David _____ coat I walked off by mistake yesterday. [ ]
A. in whose
B. in that
C. with which
D. with her
治疗肝胆火盛、邪热外侵型脓耳的首选方剂是：
A．龙胆泻肝汤B．柴胡清肝汤C．蔓荆子散D．疏风清热汤E．桑菊饮
