The semilunar valves prevent backflow into the
A) atria.
B) aorta.
C) ventricles.
D) pulmonary trunk.
E) venae cavae.
C) ventricles.
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The electrical path to ground may be completed by __________
A) The vehicle frame B) The metal body of the vehicle C) Both A and B D) Neither A nor B
Which of the following best describes PLD PROM architecture?
A) The inputs to the AND array and the product line inputs to the OR gates are both programmable. B) The inputs to the AND array are programmable and the product line inputs to the OR gates are hard-wired. C) The inputs to the AND array and the product line inputs to the OR gates are both hard-wired. D) The inputs to the AND array are hard-wired and the product line inputs to the OR gates are programmable.
Before starting a new unit, the technician should:
A) Ohm out all electrical components. B) Perform both a mechanical and electrical precheck. C) Check the unit amp draw. D) Check the system superheat.
In Figure E-1, is a circuit in which a voltage x (t) = Asin (2?f0t) is connected periodically to a resistor by a switch. The switch rotates at a frequency fs of 500 rpm. The switch is closed at time t=0 an each time the switch closes it stays closed for 10 ms.
