Which is wrong for describing linear transform matrix P（）
A. For linear time-invariant system, nonsingular matrix P won’t change system eigenvalues
B. For linear time-invariant system, nonsingular matrix P won’t change system transfer function
C. For linear time-invariant system, nonsingular matrix P won’t change system state space model
D. Nonsingular matrix P is consisting of linearly independent vectors
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The classical control theory includes（）
A. The Routh and Hurwitz stability criteria
B. Nyquist stability analysis
C. Root locus analysis
D. Kalman filter
Compared with analog signal process, the advantage of digital signal process includes（）
A. The accuracy of the DSP is more guaranteed
B. The DSP system is corresponding to multiple functions
C. The DSP has better reliability and repeatability
D. The DSP has faster processing speed
In an actual communication system, the input and output signal forms in the digital signal processing （DSP） module are usually respectively（）
Analog signal, Digital signal
B. Digital signal, Analog signal
C. Analog signal, Analog signal
Digital signal, Digital signal
Which of the following about phonological items is RIGHT（）
All the phonological items are not isolated from each other, but are of the equal importance
B. Generally speaking, sounds are equal to letters
C. English consonants can be classified according to the manner of articulation
D. Fluency is the most essential measurement of pronunciation
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