单项选择题
A.100N B.150N C.200N D.250N
A.1.16W/(m2˙K) B.1.20W/(m2˙K) C.1.30W/(m2˙K) D.1.40W/(m2˙K)
A.1.16W/(m2˙K)B.1.20W/(m2˙K)C.1.30W/(m2˙K)D.1.40W/(m2˙K)
A.2.75或2.5B.3.05或3.2C.3.3或3.5D.3.6或者3.8
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