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【单选题】

小菜蛾是蔬菜上主要害虫,以下4种杀虫剂中在我国哪种不能用于防治小菜蛾?

A.
多杀菌素
B.
三氟氯氰菊酯
C.
氟铃脲
D.
甲胺磷
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参考答案:
参考解析:
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举一反三

【单选题】小菜蛾成虫的后足是()

A.
跳跃足
B.
开掘足
C.
步行足
D.
携粉足

【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.