【单选题】农药按防治对象分类，菊酯类属于以下（）农药？

【判断题】本课程讲授者认为发明DDT作为杀虫剂获得诺奖是个失误

【简答题】Sugar—free beets（甜菜）that still taste sweet, tastier tomatoes and brighter-colored fruits and vegetables that stay ripe（熟的）longer are all foods that are being grown now. How can theycarry traits, such ...

【判断题】白僵菌是寄生于昆虫的细菌，因此被人类利用作为微生物杀虫剂。（ ）

【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...

【单选题】下面杀虫剂属于蜕皮激素类似物的是

【单选题】拟除虫菊酯类重度中毒可发生（）

【单选题】常见拟除虫菊酯类杀虫剂有（）。

【判断题】卫生间每周要对地面喷洒杀虫剂一次，尤其注意对地漏处的喷洒。

【单选题】关于拟除虫菊酯类杀虫剂的表述正确的是:（）。