下列变化中，属于化学变化的是[ ]
A.蜡烛燃烧
B.冰熔化成水
C.汽油挥发
D.木棒折断
答案：A
脱氢反应进料泵进料后安装压力表。
The sentry guard dived into his ______ and closely observed the stranger towards him.
A．fortress B．exodus C．foxhole D．eviction
