消防车的供水能力是由该车的功率和消防水泵的供水性能决定的。
参考答案：对
The headmaster told the boy____ the angry teacher, but he refused to. [ ]
A. to apologize
B. apologize to
C. to apologize for
D. to apologize to
非牛顿流体
A．硫代硫酸钠溶液B．磺基丁二酸钠二辛酯试液C．旋光度D．折光率E．动力黏度
