Hawaii (夏威夷) is famous ______ its beautiful beaches (海滩). [ ]
A. to
B. as
C. for
D. at
答案:C
带脉失约常导致的妇科病症有
A.带下病
B.子宫脱垂
C.胎动不安
D.经断前后诸症
E.滑胎
分支损耗的定义是主路()电平与分之输出端电平之差。