固井的主要工艺过程是()。
A.射孔
B.试油
C.下套管
D.酸化压裂
E.注水泥
参考答案:C, E
-Did you come to the museum by bike yesterday?
-No. Two inches of snow fell during the night. As a result, several main roads___
A.piled snow
B.had been closed
C.were blocked
D.covered with snow
现场对岩芯录井总是要求达到“四准”()准、()准、()准、()准。