According to regulations，access to a cargo pumproom in a tanker carrying grades C or D liquid cargo shall be（）.<br>A:from areas equipped with power ventilation<br>B:only from enclosed areas free from sources of vapor ignition<br>C:from the open deck<br>D:from within the vessel

According to regulations，access to a cargo pumproom in a tanker carrying grades C or D liquid cargo shall be（）.
A:from areas equipped with power ventilation
B:only from enclosed areas free from sources of vapor ignition
C:from the open deck
D:from within the vessel

出自：海船船员证

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