Saturday, February 4, 2023
Thursday, September 15, 2022
Friday, March 15, 2024
农药毒性试验分别以下四个阶段:第一阶段:();第二阶段:();第三阶段:();第四阶段:()。...
Monday, April 22, 2024
Thursday, May 16, 2024
Monday, September 12, 2022
我国农药生产量居世界:()A、第一位;B、第二位;C、第三位;D、第四位...
Friday, March 15, 2024
Sunday, September 10, 2023
处于静息状态的神经膜,膜外K+离子浓度高而膜内Na+离子浓度较高。...
Friday, December 22, 2023
有机磷类杀虫剂占中国杀虫剂市场的60%以上分额,占有的比份最大。...
Wednesday, October 25, 2023
下列哪类农药属于负温度系数的农药()A、有机磷B、氨基甲酸酯C、拟除虫菊酯D、苯氧羧酸...
Friday, March 15, 2024
Monday, June 26, 2023
农药临时登记证的用LS表示,转为正式登记后用PD表示。...
Saturday, February 4, 2023
锈病和白粉病虽然表现的症状不同,但是它们都可以用同种药剂防治。...
Monday, March 18, 2024
Monday, September 12, 2022
Tuesday, April 16, 2024
Wednesday, October 25, 2023
Monday, February 13, 2023
Thursday, May 16, 2024
Monday, September 12, 2022