The stranger stopped and turned around ___________to see is someone was following him.

A．every few meters

B．every a few meters

C．every other meters

D．every meters

采油井单井动态分析，要从地面工艺生产管理入手，同时和井组（）联系起来，逐渐深入到每个油层内部。

A、资料井

B、测压井

C、油水井

D、措施井