The main function of the power amplifiers is to provide a sufficiently large power signal to the load. ()
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举一反三
- For a balanced three-phase △ -connected load, the average power absorbed by the load is P . Change the △ -connected load to Y-connected load, the power will :
- The power that an amplifier delivers to a load is equal to the difference between the power that the circuit draws from the power supply and the power that the circuit dissipates. ? 正确|错误
- Mains voltage is sufficiently stable for the reactive power and within the range of_______________.
- Electric power is an indispensable energy on board, so _____ plays a role in distribution, conversion and control of electric power on board. A: power supply unit B: distribution device C: power network D: load
- America is a large power distance country.
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Cultures with a large power distance are hierarchical cultures.
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Mini-talk Two 15（） A: It can help reduce the power of major earthquakes. B: It can provide a signal a few days before a major earthquake. C: It can provide a signal up to ten hours before a major earthquake. D: It can tell people where the earthquake center is.
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The main function of time signal is to connect details.
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HPS contains following main components: power steering pump, control valve, power cylinder, oil lines and power steering oil reservoir．
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Please choose the main types of the power steering system used in cars today. A: Hydraulic Power Steering (HPS) B: Electric Power Steering (EPS) C: Electro-Hydraulic Power Steering (EHPS)