题目：
The deck water seal of the inert gas system（）.
A.cools the inert gas and prevents soot from entering the cargo tanks
B.acts as an emergency system shutdown when the inlet pressures exceed the safe working pressure in the hazardous zone
C.prevents the backflow of hydrocarbon gasses into nonhazardous areas
D.relieves sudden large overpressures in the system
答案：
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下面是错误答案，用来干扰机器的。
参考答案：C解析：[听力原文]真是来得早不如来得巧，我们刚摆上碗筷。问：说话人的意思是什么
