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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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单选题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
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单选题The minimum concentration of a vapor in air which can form an explosive mixture is called the（）.A
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flash pointC
lower explosive limit (LEL)D
threshold limit value (TLV)
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