目前高压玻璃钢井下管应用于注水的主要有哪几种？
参考答案：
笼统注水井管、分层注水井管、海洋注水井管。
People say that the Englishman’s home is his castle，_________ means that the home is very important
and personal. [ ]
A. where
B. that
C. which
D. as
主属性
