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【单选题】
A higher order system is implemented by the cascading or paralleling of several sub-systems. If we want the poles of the original system is same as those of the sub-systems, then we can adopt the（ ）
A.
cascading only.
B.
paralleling only.
C.
cascading or paralleling.
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参考答案：
举一反三
【单选题】A higher order system is implemented by the cascading or paralleling of several sub-systems. If we want the zeros of the original system is same as those of the sub-systems, then we can adopt the（ ）
A.
cascading only.
B.
paralleling only.
C.
cascading or paralleling.
【判断题】Drawing mind-map based on the text is one form of information transferring activity. ()
A.
正确
B.
错误
【单选题】If a second order LTI continuous system has step response as shown as figure, then the poles of its system function are（ ）
A.
two negative real poles.
B.
a pair of conjugate poles in the right half of the s complex plane.
C.
a pair of conjugate poles in the left half of the s complex plane.
【判断题】As of 2018, the EU has been China’s largest trading partner for 15 consecutive years
A.
正确
B.
错误
【单选题】If the unit response of a causal discrete LTI system is decreasing monotonically, then a correct statement about the system function’s poles of this system is（ ）
A.
Poles are conjugate complex number located in the left half of the z plane.
B.
Poles are negative real number.
C.
Poles are positive real number smaller than 1.
【多选题】Generally speaking, _______ ______belong to productive skills.
A.
listening
B.
speaking
C.
reading
D.
writing
【单选题】There are two second order causal discrete LTI systems with conjugate complex poles. The poles of system 1 are located in the left half of the z plane, while system 2 in the right half. The correct st...
A.
System 1 is causal and stable, while system 2 is causal and unstable.
B.
The frequency of the unit response of system 1 is higher than that of system 2.
C.
The unit responses of both systems are damping oscillation.
相关题目：
【单选题】A higher order system is implemented by the cascading or paralleling of several sub-systems. If we want the zeros of the original system is same as those of the sub-systems, then we can adopt the（ ）
A.
cascading only.
B.
paralleling only.
C.
cascading or paralleling.
【判断题】Drawing mind-map based on the text is one form of information transferring activity. ()
A.
正确
B.
错误
【单选题】If a second order LTI continuous system has step response as shown as figure, then the poles of its system function are（ ）
A.
two negative real poles.
B.
a pair of conjugate poles in the right half of the s complex plane.
C.
a pair of conjugate poles in the left half of the s complex plane.
【判断题】As of 2018, the EU has been China’s largest trading partner for 15 consecutive years
A.
正确
B.
错误
【单选题】If the unit response of a causal discrete LTI system is decreasing monotonically, then a correct statement about the system function’s poles of this system is（ ）
A.
Poles are conjugate complex number located in the left half of the z plane.
B.
Poles are negative real number.
C.
Poles are positive real number smaller than 1.
【多选题】Generally speaking, _______ ______belong to productive skills.
A.
listening
B.
speaking
C.
reading
D.
writing
【单选题】There are two second order causal discrete LTI systems with conjugate complex poles. The poles of system 1 are located in the left half of the z plane, while system 2 in the right half. The correct st...
A.
System 1 is causal and stable, while system 2 is causal and unstable.
B.
The frequency of the unit response of system 1 is higher than that of system 2.
C.
The unit responses of both systems are damping oscillation.
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