向井内油层注入高压水驱油的往复泵,称().
参考答案:注水泵
以下脏器中,与小网膜囊和胃后壁不相邻的是()
A.膈脚
B.肝尾叶
C.胰
D.左肾
E.左肾上腺
The dog was tearing the cloth()its teeth.
A.with
B.by
C.through
D.in