目前,采油井可分为自喷井采油、()井采油、潜油电泵井采油、电动螺杆泵井采油、水力活塞泵井采油等。
A.压力
B.注水
C.裸眼
D.抽油机
参考答案:D
Would you love to have dinner with me?
A.Yes, I’d love to
B.Yes, I’d love
C.Yes, I’d love to have
D.No, I’d not love
治疗肺炎链球菌肺炎首选的抗菌药物是()
A.氧氟沙星
B.红霉素
C.青霉素
D.链霉素
E.环丙沙星