Fighting a rig fire in a watertight compartment with hoses could reduce the stability of the rig by（）.

A.progressive downflooding

B.reducing the level of drill water from the storage tanks

C.causing a list due to the water in the compartment

D.reducing the KG to minimum allowable

钎焊密封工艺主要工艺条件有钎焊气氛控制、温度控制和密封腔体内（）控制。