-Can I have some meat?    

-Certainly,just_______.     [    ]

A. take it as you like                              

B. eat it as you please      

C. help yourself                                    

D. help yourself at home

进入碱洗塔中的尾气要先经过（）处理。

A.旋风分离器、酸吸收塔

B.旋风分离器、静电除雾器

C.SO₃冷却器、SO₃过滤器

D.以上三项都不对