填料函漏液过多的原因不可能是（）。
A.填料压得过紧
B.油压过高
C.冷却水进不去
D.轴套有损坏
参考答案：B
As soon as the shoes that the boy wanted to buy were_____ in the store, the salesgirl called him. [ ]
A. present
B. possible
C. available
D. convenient
生物安全实验室的试验废弃物可以按照生活垃圾直接进行处理。
