Fire dampers prevent the fire spreading through the process of （）.
A. convection
B. conduction
C. radiation
D. direct contact
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When you are transferring fuel oil to the setting tanks, precautions to be observed should include （）
A. plugging gooseneck tank vents to prevent accident overflow
B. maintaining a high transfer rate until a slight trickle of oil is observed flowing from the overflow line
C. sounding the tanks frequently and reducing the transfer rate as the level approaches maximum fill
D. maintaining a supply of chemical dispersant to cleanup minor oil spills adjacent to the shi
沥青的加热至施工温度后的保温时间，对道路石油沥青（）当天加热的应当天用完
《汽车大修竣工出厂技术条件》（GB/T3798.1～.2—2005）规定，汽车大修质量保证的形式是签发汽车大修出厂合格证及有关技术文件。
A. 正确
B. 错误
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