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  • 选用电阻时,下列说法正确的是( )
  • Marcus Jordan does’t play basketball so _____ as his father, Michael Jordan.
  • It was very late, _____ the students still went on studying in the classroom.
  • They walked _____ the town looking for a place to eat.
  • About____ of the workers in the company were born in the_____.
  • Lucy made several paper planes, and _____ of them can fly high in the sky.
  • —How _____ is it from Xi’an to Dunhuang? —It’s less than 3 _____ flight.
  • 花生叶是复叶
  • “干时一把刀,湿时一团糟”说的是
  • 水稻收割的适宜时期在
  • 适用于病虫在田间分布均匀的取样方法是
  • 防治土传病害时,可实行_____的种植方式减轻病害
  • 下列属于迁飞性害虫的是
  • 单体雄蕊是
  • 一般植物生长速率的表现为
  • 植物缺硼时,其缺素状首先出现在
  • 如图所示的金属圆环放在匀强磁场中,将它从磁场中匀速拉出来,下列哪个说法是正确的( )
  • 土壤温度的调控技术不包括
  • 管子2DG6是( )二极管。
  • 至少( )片74197(集成4位二进制计数器)可以构成M=1212的计数。