A spark plug has a metal threaded shell, electrically isolated from a central electrode by a porcelain insulator. The central electrode, which may contain a resistor, is connected by a heavily insulated wire to the output terminal of an ignition coil or magneto.
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As of March 28, Trump had named 61 people to these positions, 21 of whom had been confirmed by the Senate. That figure doesnât reflect well on the Senate, but it still leaves an astonishing 492 key government positions awaiting a nominee.