影响矿井生产能力因素有哪些？
参考答案：
1.储量
2.地质条件
3.工艺装备水平
4.经济与社会因素。
— Where _ you just now?
— I _____ in the playground. [ ]
A. was; were
B. was; was
C. were; was
D. were; were
下列哪项不属于胆汁瘀积性黄疸（）
A.肝内胆管结石
B.长期服用甲基睾丸酮所致黄疸
C.毛细胆管型病毒性肝炎
D.肝硬化
E.妊娠复发性黄疸
