园林树木栽培的肥料管理中,夏季追肥多采用幅射状沟施法。
参考答案:错
--- I wonder how long you ____ in Hawaii.
--- Just for the weekend, then I had to attend a conference in Los Angeles.
A.will stay
B.stayed
C.have stayed
D.were staying
切印装置()系统的气压低于要求值,又调整无效,可能是供气系统停气。
A.输送
B.烘干
C.叠放
D.计数