A.45℃ B.10℃ C.常溫 D.70℃
A.常壓 B.0.5Mpa C.1.0Mpa D.1.5Mpa
A.加快反應(yīng)沉降 B.加快反應(yīng)上升 C.減緩反應(yīng)沉降 D.減緩反應(yīng)上升