题目

用比值法定义物理量是物理学中一种很重要的思想方法，下列哪些公式是这些物理量的比值定义式                                              A.加速度     B.电阻   C.电场强度   D.电流强度  答案：BC解析:略 He was a member of a dining club, the Bullingdon Club, ______ was famous for its hard drinking and bad behavior.    A. that             B. which                 C. who                   D. where