题目内容
(请给出正确答案)
[主观题]
Operation of the valve control release on a fixed CO2 system must immediately ______.A.rel
Operation of the valve control release on a fixed CO2 system must immediately ______.
A.release CO2 to the protected space
B.secure all mechanical ventilation in the protected space
C.sound the rig’s general alarm signal for a fire
D.sound an alarm in the ballast control room
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