准定态水侵
参考答案:当油藏边底水有地面水补充,供水区压力不变,但采液速度大于或小于水侵速度时,则引起油区压力变化,水侵为准定态的。
下列哪一项不是我国制定大气卫生标准的原则()
A.急性中毒或慢性中毒
B.对人体健康无间接危害
C.选用最敏感的指标
D.对主观感觉无不良影响
E.对大气的自净作用无影响
When did I decide to find out about "Aunt Maggie"
A.Three years ago.
B.When my father died.
C.About 85 years after my correspondence with her.
D.When I was nineteen.