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【单选题】
( 6 ) 以下关于回归模型检验说法正确的有 ( ) 。 A . 拟合检验可以通过样本决定系数、施瓦茨准则、信息准则来检验 B . 拟合高的模型一定比拟合低的模型更好,更适合于各种应用 C . 虽说样本决定系数并没给出具体的临界值对拟合的好坏作出判定,但可以根据其与 F 统计量的关系进行推导判定 D . 对于一元线性回归模型,回归方程的显著性检验与回归参数的显著性检验是等价的 E . 模型参数的线性约束检验、若干个回归系数同时为零的检验以及方程稳定性检验用到的统计量均为 F 统计量
A.
B.
C.
D.
E.
E
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举一反三
【单选题】The muscles of a fossilized animal can sometimes be reconstructed because______.
A.
they were preserved with the rest of the animal
B.
they were lodged inside the animal's skull
C.
they were hardened parts of the animal's body
D.
they were attached to the animal's skeleton
查看完整题目与答案
【单选题】According to the third paragraph, which of the following is true?
A.
A fossilized animal's appearance is usually restored accurately.
B.
It is difficult to restore some fossilized animals because they had no external parts.
C.
The prehistoric elephants are hairless.
D.
An extinct animal does not definitely look like its living relatives.
查看完整题目与答案
【单选题】The reconstruction of a fossilized animal's external appearance is considered necessary in order to______.
A.
satisfy popular curiosity
B.
answer scientific questions
C.
establish its activities
D.
determine its eating habits
查看完整题目与答案
【单选题】在集成运算放大器（以下简称集成运放，且均为理想型集成运放）的两个工作区中，当集成运放工作在_______时，输出为正向或负向饱和电压。
A.
线性区
B.
非线性区
C.
线性区 和线性区均可
D.
线性区 和线性区都不对
查看完整题目与答案
【单选题】张护士,为手外伤患者换药后,使用化学消毒剂浸泡血管钳的注意事项中,下列错误的是
A.
使用前用3%生理盐水冲净，以免药液刺激组织
B.
严格掌握药物的有效时间和浓度
C.
浸泡前要打开器械的轴节
D.
物品应全部浸没在消毒液中
E.
消毒液容器要盖严
查看完整题目与答案
【简答题】vt. 赚得,获得,博得
查看完整题目与答案
【单选题】According to the text, the soft part of fossilized animals
A.
can always be accurately identified.
B.
have usually left some traces.
C.
can usually be reconstructed.
D.
have always vanished without any trace.
查看完整题目与答案
【单选题】According to the third paragraph, which of the following is true?
A.
A fossilized animal’s appearance is usually restored accurately.
B.
It is difficult to restore some fossilized animals because they had no external parts.
C.
The prehistoric elephants are hairless.
D.
An extinct animal does not definitely looked like its living relatives.
查看完整题目与答案
【单选题】货品从进入分拣系统直至传送到指定的分配位置为止,都是依照指令靠自动装置来完成分拣作业的一种分拣方式是
A.
人工拣选法
B.
分类拣选法
C.
机械拣选法
D.
自动拣选法
查看完整题目与答案
【单选题】The fossilized remains of a type of camel ______ a dog have been found in the Bad Lands to South Dakota.
A.
no smaller than
B.
not smaller than
C.
no larger than
D.
not larger than
查看完整题目与答案
相关题目：
【单选题】The muscles of a fossilized animal can sometimes be reconstructed because______.
A.
they were preserved with the rest of the animal
B.
they were lodged inside the animal's skull
C.
they were hardened parts of the animal's body
D.
they were attached to the animal's skeleton
查看完整题目与答案
【单选题】According to the third paragraph, which of the following is true?
A.
A fossilized animal's appearance is usually restored accurately.
B.
It is difficult to restore some fossilized animals because they had no external parts.
C.
The prehistoric elephants are hairless.
D.
An extinct animal does not definitely look like its living relatives.
查看完整题目与答案
【单选题】The reconstruction of a fossilized animal's external appearance is considered necessary in order to______.
A.
satisfy popular curiosity
B.
answer scientific questions
C.
establish its activities
D.
determine its eating habits
查看完整题目与答案
【单选题】在集成运算放大器（以下简称集成运放，且均为理想型集成运放）的两个工作区中，当集成运放工作在_______时，输出为正向或负向饱和电压。
A.
线性区
B.
非线性区
C.
线性区 和线性区均可
D.
线性区 和线性区都不对
查看完整题目与答案
【单选题】张护士,为手外伤患者换药后,使用化学消毒剂浸泡血管钳的注意事项中,下列错误的是
A.
使用前用3%生理盐水冲净，以免药液刺激组织
B.
严格掌握药物的有效时间和浓度
C.
浸泡前要打开器械的轴节
D.
物品应全部浸没在消毒液中
E.
消毒液容器要盖严
查看完整题目与答案
【简答题】vt. 赚得,获得,博得
查看完整题目与答案
【单选题】According to the text, the soft part of fossilized animals
A.
can always be accurately identified.
B.
have usually left some traces.
C.
can usually be reconstructed.
D.
have always vanished without any trace.
查看完整题目与答案
【单选题】According to the third paragraph, which of the following is true?
A.
A fossilized animal’s appearance is usually restored accurately.
B.
It is difficult to restore some fossilized animals because they had no external parts.
C.
The prehistoric elephants are hairless.
D.
An extinct animal does not definitely looked like its living relatives.
查看完整题目与答案
【单选题】货品从进入分拣系统直至传送到指定的分配位置为止,都是依照指令靠自动装置来完成分拣作业的一种分拣方式是
A.
人工拣选法
B.
分类拣选法
C.
机械拣选法
D.
自动拣选法
查看完整题目与答案
【单选题】The fossilized remains of a type of camel ______ a dog have been found in the Bad Lands to South Dakota.
A.
no smaller than
B.
not smaller than
C.
no larger than
D.
not larger than
查看完整题目与答案