冻疮的命名方法是( )
Which of the following practices is most likely to encourage students' cooperation in learning?
某储罐区有钢制双盘式外浮顶储,单罐容积为2000m³,设置了低倍数泡沫灭火系统,该泡沫灭火系统的设计保护面积应按( )确定。