Which of the following would be considered an abiotic factor of an ecosystem?
a. fungi c. water
b. mosquitoes d. antelope
C
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Most houses are designed for one specific family.
Answer the following statement true (T) or false (F)
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¿Qué dispositivo se utiliza normalmente para encender o apagar la iluminación en respuesta a sucesiones de acontecimientos conocidos o planificados?
a. Detector de movimiento b. Sensor de infrarrojos c. Sensor de sonido d. Temporizador electrónico
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When processing the signal from an inductive pulse generator used to measure shaft rotational speed, which of the following is used to process the signal to an rpm value?
A. DC voltage B. AC voltage C. Amperage D. Frequency
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A relay whose contacts close when energized is
A) an NC relay. B) normally closed. C) defective. D) a NO relay.
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