变压器的温升是指变压器所测量部位的温度与周围环境温度之差。
参考答案：对
--How is Tom, do you know ?--____.
A．He is very clever.
B．He’s right
C．He is much better
D．He is a doctor
试述石灰石/石灰法洗涤的原理（湿法）？
