单项选择题
A.1%~4% B.5%~9% C.10%~14% D.15%~19% E.20%~24%
A.36~34℃ B.32~30℃ C.28~26℃ D.24~22℃ E.20~18℃
A.3.7% B.4.7% C.5.7% D.6.7% E.7.7%
A.传导散热 B.辐射散热 C.蒸发散热 D.对流散热 E.以上都不是
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