1. 8868. The navigation lights of some aircraft consist of a single circuit controlled by a single switch which has an ON position and an OFF position, with no additional posi tions possible. This switch is referred to as a A. double-pole, single-throw (DPST), two-position switch. B. single-pole, double-throw (SPDT), two-position switch. C. single-pole, single-throw (SPST), two-position switch.