通过烟气换热器()将热原烟气中的热量蓄积并加热吸收塔出来净化后的冷烟气。原烟气温度由()降至()经过吸收塔的入口向上流动穿过托盘及喷淋层。
参考答案:GGH;123℃;86.8℃
直线y=kx+b经过点A(-2,0)和y轴正半轴上的一点B,如果△ABO(O为坐标原点)的面积为2,则b的值为( )。
根据所给的答句,写出相应的问句。
1. _____________________________________________?
I usually go to Beijing by plane.
2. _____________________________________________?
The cinema is next to the bookstore.
3. _____________________________________________?
Yes. I'm going to play football this afternoon.
4. _____________________________________________?
My mother is a writer.
5. _____________________________________________?
The rain comes from the clouds.