甲、乙、丙类液体储罐区消防用水量应按（）之和计算。
A、灭火用水量
B、冷却用水量
C、室内消防用水量
D、室外消防用水量
参考答案：A, B
— Have all the students know that our class will visit the factory this afternoon.
— Yes, Every student _____ about it. [ ]
A. have told
B. have been told
C. has told
D. has been told
幽门梗阻时，呕吐物的特点是（）
A.含血液
B.隔夜食物
C.大量黏液
D.咖啡色
E.黄绿色稀薄液
