Which of the following circuits is used to eliminate a portion of a signal? （ ）.
举一反三
- Which of the following circuits is used to eliminate a portion of a signal? （ ）. A: Voltage multiplier B: Voltage divider C: Clipper D: Damper
- block signal A: a fixed signal that lets engineers know if a train can enter a block. B: a conductive connector used to maintain circuit continuity for track circuits and electrified tracks.
- which of the following can be used to eliminate the determinate error A: conducting a blank test B: performing a comparative test C: calibrating the instrument D: increasing number of measurement
- Which sentence in the following is signal to end a presentation?
- Which of the following can be referred to as a time signal?