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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Data deduplication ratios depend on many factors. However， deduplication ratios are generallygreater for what type of data？（）
A. encrypted data
B. compressed data
C. archive data
D. multiplexed data stream
CorelDRAW X5支持自定义位图样式
A. 正确
B. 错误
调速系统常用的反馈形式有几种？（）
A. 杠杆反馈
B. 油口反馈
C. 弹簧反馈
D. 温度反馈
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