单项选择题

Diesel fuel is relatively safe to handle due to its low volatility, but the fumes will self-ignite and continue to burn steadily if the fuel is heated to the （）.

A.flash point
B.auto-ignition point
C.volatility point
D.upper explosive limit

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船舶电气与船舶安全

Diesel fuel is relatively safe to handle due to its low volatility, but the fumes will self-ignite and continue to burn steadily if the fuel is heated to the （）.