皮皮学,免费搜题
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搜题
【单选题】
在总体均值和总体比例的区间估计中,边际误差由
A.
置信水平确定
B.
统计量的抽样标准差确定
C.
置信水平和统计量的抽样标准差确定
D.
统计量的抽样方案确定
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【单选题】听力原文:W Hi, Gwen, this is Erica West from Capitol Productions. We're thinking of opening another hotel near Laguna Beach and we'd like to request your services again. Can we meet sometime today or tomo...
A.
To ask Gwen about a client
B.
To request Gwen's services
C.
To get advice on production
D.
To invite Gwen to the beach
【判断题】摘心是摘去枝条的生长点,达到平衡枝势,控制枝条生长的目的。( )
A.
正确
B.
错误
【判断题】摘心目的主要是促进营养回流和新稍增粗。
A.
正确
B.
错误
【单选题】When Lucy got the gift from her mother , she couldn’t wait ______ it and have a look .
A.
open
B.
opening
C.
to open
D.
opened
【判断题】DM consumes is equal to the purchase plus opening inventory of RM.
A.
正确
B.
错误
【单选题】By serving others, a person focuses on someone other than himself or herself, can be very eye-opening and rewarding. [     ]
A.
who
B.
which
C.
what
D.
that
【多选题】实行蔬菜的摘心、打杈的植株调整的措施,其目的是( )。
A.
控制株形
B.
控制生育期
C.
控制营养生长
D.
合理密植
E.
固定植株
【简答题】British teaching unions Sunday cautiously welcomed government plans to extend school opening hours for pupils ages under 14 that 【M1】______ are aimed at allowing parents working longer and keeping kid...
【简答题】实生苗长到一定高度后要摘心,目的是()
【简答题】果树夏季新梢摘心的目的是_______、_______、提高坐果率、促进枝芽充实等。
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