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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
  • 动力供电线路中,采用星形联结三相四线制供电,交流电频率为50Hz,线电压为380V,则( )
  • 患者,女性,30岁,痔复发需坐浴治疗。欲消毒坐浴盆,最简单、有效的方法是( )。
  • 集合A={x|-1≤x≤3,x∈N*}的真子集的个数是( )
  • 集成稳压器CW317,说法正确的是( )
  • 关于水稻病虫害主要采取的防治措施,不正确的是
  • 一般认为,无限花序的开花顺序是
  • 下列说法中,错误的是
  • 下列各项中,属于土壤氮有效化过程的是