问题
单项选择题
对形成圈闭起主导作用的因素,是指对储集层()起封闭作用的因素。
A.油、气、水
B.油、气
C.水
D.上倾方向
答案
参考答案:D
对形成圈闭起主导作用的因素,是指对储集层()起封闭作用的因素。
A.油、气、水
B.油、气
C.水
D.上倾方向
参考答案:D
用方框中所给词的适当形式填空。(5分)
小题2:Tom hopes to ____ with his old friends in America. 小题3:Mike was late for school ____ his illness yesterday. 小题4: You must ____ all the windows are closed before you leave the room. 小题5: We can ____ to help Mary with her lessons. |