With reference to the requirements under IMO MODU CODE，Space in which an explosive gas/air mixture is likely to occur in normal operation of Drilling Units is considered as（）.<br>A:Zone0<br>B:Zone1<br>C:Zone2<br>D:Zone3

With reference to the requirements under IMO MODU CODE，Space in which an explosive gas/air mixture is likely to occur in normal operation of Drilling Units is considered as（）.
A:Zone0
B:Zone1
C:Zone2
D:Zone3

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