除去CO2中混有的少量CO，可使混合气体通过请选择DCBA-?0O+\+w/R:l/X+i9\-d5w5U1m*s,X0[+Y6b
A.石灰水5U1m*s,X0[+Y6b
B. 灼热的碳层5U1m*s,X0[+Y6b
C.水5U1m*s,X0[+Y6b
D. 灼热的氧化铜5U1m*s,X0[+Y6b