I have a pet in my home. _____ name is Tom.[ ]
A. His
B. Their
C. It's
D. Its
答案:D
编敕作为一种重要的法律形式形成于( )。
A.隋代
B.唐代
C.宋代
D.明代
紊流可划分为哪些流区?如何划分?各流区起主要作用的力是什么?