垃圾焚烧炉产生的烟气,在进入布袋除尘器前的进烟管道时,喷入(),吸收烟气里的重金属元素。
A. 石灰浆;
B. 稀释的氨水;
C. 水蒸气;
D. 活性炭。
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垃圾进入焚烧炉后,在炉内经历四个过程,最后产生烟气、炉渣和飞灰,在以下四个过程中,哪个过程是垃圾在炉内焚烧的第三阶段()。
A. 垃圾中水分蒸发;
B. 垃圾热解;
C. 挥发分燃烧;
D. 碳的气化。
垃圾焚烧的工艺要求中,燃烧烟气温度必须在()以上,且滞留时间超过(),这样才能保证垃圾焚烧过程中使有机物得到彻底的解决,减少有害气体的产生(特别是二嗳英),从而减少后道工序的处理负荷和对周围环境的污染。()
A. 550℃,1秒;
B. 650℃,3秒;
C. 850℃,2秒;
D. 950℃,4秒。
What values did parents teach their children in the 1950s?
A. a brief in God
B. hard work
C. service to their country
D. all above
How did young people rebel agaist their parents?
A. They dropped off
B. They quarreled with their parents
C. They were dissatisfied with everything
D. They let their hair grow long and wear strange cloth