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【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
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参考答案:
举一反三

【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.

【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.

【多选题】The Pacific route is composed of

A.
Asia-America route
B.
Asia-Central America route
C.
Asia-South America route
D.
Atlantic route

【单选题】The wrong statement about the zeros and poles of a continuous LTI all-pass system is( )

A.
All poles are located in the left half of the s plane, while all zeros are located in the right half of the s plane.
B.
All poles are located in the right half of the s plane, while all zeros are located in the left half of the s plane.
C.
Every pole has a corresponding zero which is mirror symmetrical to it about imaginary axis.
相关题目:
【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.
【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.
【多选题】The Pacific route is composed of
A.
Asia-America route
B.
Asia-Central America route
C.
Asia-South America route
D.
Atlantic route
【单选题】The wrong statement about the zeros and poles of a continuous LTI all-pass system is( )
A.
All poles are located in the left half of the s plane, while all zeros are located in the right half of the s plane.
B.
All poles are located in the right half of the s plane, while all zeros are located in the left half of the s plane.
C.
Every pole has a corresponding zero which is mirror symmetrical to it about imaginary axis.
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