If the ownership of the companies is open to the public, we call them publicly held companies. They are companies with shares which can be purchased or sold by any member of the public.
A.
正确
B.
错误
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【单选题】For an ideal op amp, why the input current through both the inverting and noninverting input terminal are 0?
A.
For an ideal op amp, the output impedance is 0.
B.
For an ideal op amp, the output impedance is infinity.
C.
For an ideal op amp, the input impedance is infinity.