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【判断题】

在喷药防治香蕉叶斑病时,常添加些面粉或洗衣粉到药液中增加粘稠性,提高防治效果。

A.
正确
B.
错误
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】马拉硫磷(即防虫磷)对下列那些害虫的防治效果较好()。

A.
锯谷盗、粗脚粉螨
B.
谷蠹、小菌虫
C.
赤拟谷盗、白腹皮蠹幼虫
D.
锯谷盗、米象

【单选题】How to Use the Sense of Smell Our sense of smell, which we normally take for granted, is nowadays being increasingly used for purposes which might surprise us if we aware of them. One area in which sm...

A.
3) preferred ______.A. the smell of shoes to that of flowersB. the smell of flowers to that of shoesC. the shoes in the room with purified airD. the shoes in the room with appealing smells

【单选题】对血吸虫病的诊断、疗效考核和防治效果都有重要价值的是

A.
皮内试验
B.
环卵沉淀试验
C.
间接血凝试验
D.
粪便涂片直接检查虫卵
E.
循环抗原酶免疫法