油田开发过程中某个阶段取得的含油、含水饱和度称为()含油、含水饱和度。
A、初期
B、目前
C、末期
D、阶段
参考答案:B
He had lost his temper and his health in the war and never found()of them again.
A.neither
B.either
C.each
D.all
风管工作压力为1500Pa的空调系统,为()
A.低压系统
B.中压系统
C.高压系统
D.超高压系统