单项选择题
The thermal energy of the steam is converted into ( ) energy by the turbine.
A.electrical
B.mechanical
C.chemical
D.potential
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单项选择题
In the form. of ( ) the output is continuously fed back and compared with the reference input.
A.continuous
B.discontinuous
C.discrete-data
D.sampled-data
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单项选择题
The overall transfer function is the ratio of the transform. of the controlled variable to the transform. of ( ).
A.the
B.the
C.the
D.the
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