A.>1cm B.0.3~0.4cm C.0.5~0.6cm D.0.7~0.8cm E.無所謂
A.傳導(dǎo) B.輻射 C.位移 D.對流 E.以上都不是
A.1mm~1m B.10cm~1m C.1cm~10m D.1~10mm E.10~100mm