问题
单项选择题
Fire may ba spread by which means?（）.
A.Conduction of heat to adjacent surfaces
B.Direct radiation
C.Convection
D.All of the above
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
Fire may ba spread by which means?（）.
A.Conduction of heat to adjacent surfaces
B.Direct radiation
C.Convection
D.All of the above
参考答案：D