Saturday, October 12, 2024
Thursday, September 15, 2022
问题:不全变态的昆虫个体发育一般为()A、一个阶段B、两个阶段C、三个阶段...
Friday, December 27, 2024
问题:昆虫头部的主要功能是()。A、感触B、感触和取食C、运动D、代谢...
Tuesday, August 8, 2023
Thursday, September 15, 2022
Thursday, September 15, 2022
问题:下列那一病害,侵染后可引起烂种烂芽,植物基部可明显缢缩倒伏枯死()。A、水稻纹枯病B、油菜菌核病C、棉花立枯病D、玉米大小斑病...
Saturday, December 31, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Sunday, January 28, 2024
Tuesday, November 29, 2022
问题:目前已知寄生在高等植物细菌内一类最小病原物是()。...
Thursday, September 15, 2022
Saturday, July 20, 2024
Sunday, February 16, 2025
问题:昆虫的腹部是()的中心,腹腔内有()、()、()、()、()等器官。...
Sunday, December 29, 2024
问题:下列不属于单循环病害的是:()A、小麦锈病B、小麦黑穗病C、线虫病D、棉花枯萎病...
Monday, January 22, 2024
Monday, September 12, 2022
Monday, September 12, 2022
Thursday, September 15, 2022
Thursday, October 13, 2022