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【单选题】
以下关于最小二乘法的说法错误的是
A.
最小二乘回归线是最小化残差平方和的直线
B.
残差=观察值-预测值
C.
为最小二乘回归线方程
D.
用最小二乘回归法拟合的直线是最优的
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参考答案:
举一反三
【简答题】中国新闻史上第一份以政论著称的报刊是 ,主编是 。
【单选题】The magnetic systems can be used in the waysof ___ and biocompatible microspheres.
A.
implants
B.
microspheres
C.
ostomic pump
D.
implanted pumps
【单选题】Which of the following data storage systems provides the most efficient random access to individual data items?
A.
Main memory
B.
Magnetic disk
C.
CDs/DVDs
D.
Flash drives
【简答题】Which of the following storage systems is best suited for storing and retrieving long strings of data that are processed in their sequential order?A. main memory B. magnetic disk C. DVDs D. flash dr...
【简答题】Flight instruments and systems is used to display the motion of an aircraft. It is including , horizon indicator, magnetic compass, directional gyro, compass system etc..
【单选题】Computer vision systems for observing the road are better than magnetic systems because they _________.
A.
are more accurate
B.
can read road signs
C.
do not need special equipment buried in the road
D.
can make use of the vehicle's control computer
【单选题】Flight instruments and systems is used to display the motion of an aircraft. It is including , horizon indicator, magnetic compass, directional gyro, compass system etc..
A.
Altimeter , airspeed indicator
B.
Inertial navigation system and GPS
C.
T CAS and Transponder
D.
VOR and DME
【单选题】制种田该如何选择?
A.
背风向阳
B.
遮阴田
C.
积水田
D.
迎风坡地
【单选题】Which of the following storage systems is best suited for storing and retrieving long strings of data that are processed in their sequential order?
A.
Main memory
B.
Magnetic disk
C.
Optical CDs and DVDs
【单选题】Which of the following data storage systems provides the most efficient random access to individual data items?
A.
Main memory
B.
Magnetic disk
C.
Optical CDs and DVDs
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