A. 4～5d B. 6～7d C. 7～9d D. 10～12d E. 14d
A. By its thick layer of fat under its skin. By moving frequently in the water. C. By adjusting its blood temperature. D. By taking in hot air.
A. 便秘，伴面色苍白，尿清肢冷，喜热恶凉，苔白润，脉沉迟，属于
A. 辐射散热 B. 传导散热 C. 对流散热 D. 不感蒸发 E. 发汗蒸发
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