风机盘管是用（）经盘管冷却或加热空气后，由风机送出。

A.制冷剂

B.冷水或热水

C.冷却水

D.空气

Your vessel is equipped with a fixed C0₂ system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（）.

A.Use the C0₂ system and evacuate the engine room

B.Use the fire main system and evacuate the engine room

C.Evacuate the engine room and use the C0₂ system

D.Evacuate the engine room and use the fire main system