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【单选题】
燃油添加剂的主要功用是（）.
A.
提高热值
B.
防冰和防微生物
C.
防止在喷出燃油中形成过氧化物
D.
保护燃油系统中的含铁金属，防止腐蚀
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Many Americans harbor a grossly distorted and exaggerated view of most of the risks surrounding food．Fergus Clydesdale, head of the department of food science and nutrition at the University of Massac...
A.
They overlook the risks of the food they eat.
B.
They overestimate the hazards of their food.
C.
They are overoptimistic about the safety of their food.
D.
They overstate the government's interference with the food industry.