水蒸气烫伤比开水烫伤更严重,这是因为[ ]
A.水蒸气的温度比开水温度高
B.水蒸气降温时放热多
C.水蒸气与皮肤的接触面大
D.水蒸气在液化时要大量放热
答案:D
Chinese President Xi Jinping promised on Sunday, “We’ll make great efforts the Chinese dream.”
A.achieving
B.achieved
C.to achieve
D.to have achieved
体温仍处于正常状态的中暑病是
A.日射病
B.热痉挛
C.热射病
D.热衰竭
E.中暑先兆