题目内容

发生量预测方法()

A. 环境因子法
B. 害虫基数法
C. 形态指标法
D. 性比法

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更多问题

有效积温应用有哪些

可以用来治疗尿崩症的降血糖药是:

A.格列齐特
B.小剂量胰岛素
C.甲苯磺丁脲
D.氯磺丙脲
E.瑞格列奈

Directions: Choose the best answer from the four choices marked A, B, C and D.The mountains form a natural _________between the two countries.

A. prevention
B. obstruction
C. barrier
D. jam

They built a ten-foot high fence to _________the house against intruders.

A. assure
B. secure
C. insure
D. issue

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