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【单选题】
.下列具有杀螨活性的菊酯类杀虫剂为（）
A.
氯氰菊酯
B.
氰戊菊酯
C.
三氟氯氰菊酯
D.
甲氰菊酯
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【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.
【单选题】关于拟除虫菊酯类杀虫剂的表述正确的是:（）。
A.
此类杀虫剂作用机制和DDT完全一样
B.
在高温时对淡色库蚊的杀虫效果比在低温时好
C.
此类药剂属于正温度系数药剂
D.
此类药剂混合使用易产生抗性
相关题目：
【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.
【单选题】关于拟除虫菊酯类杀虫剂的表述正确的是:（）。
A.
此类杀虫剂作用机制和DDT完全一样
B.
在高温时对淡色库蚊的杀虫效果比在低温时好
C.
此类药剂属于正温度系数药剂
D.
此类药剂混合使用易产生抗性
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