锅炉的参数有什么？
参考答案：
额定蒸汽压力、额定热功率、工作压力、额定蒸发量、介质出口温度。
It has been proved taking exercise regularly does good to one’s health.
A．whether
B．when
C．what
D．that
慢性游走性红斑(erythemachronicummigrans；ECM)
