稀酸贮槽转耙扭矩高可能是（）。
A、液位高
B、稀酸贮槽内壁结垢严重
C、淤浆排放量太大
参考答案：B
Several witnesses gave accounts of what they had seen. It took many hours to _______ the court of the driver's guilt.
A．prove
B．convince
C．persuade
D．demonstrate
阐述信令路由管理功能及其组成程序？
