During loading and discharging operations，in addition to when the cargo tanks have been properly filled，each inert gas system must be capable of maintaining a minimum gas pressure of（）.<br>A:150 millimeters of water pressure<br>B:125 millimeters of water pressure<br>C:100 millimeters of water pressure<br>D:75 millimeters of water pressure

During loading and discharging operations，in addition to when the cargo tanks have been properly filled，each inert gas system must be capable of maintaining a minimum gas pressure of（）.
A:150 millimeters of water pressure
B:125 millimeters of water pressure
C:100 millimeters of water pressure
D:75 millimeters of water pressure

出自：海船船员证

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