The electronics in the rain-sense wiper module can detect the presence of rain drops under various lighting conditions. Which of these solid state components is used to sense rain drops?
A) Infrared light sensor B) Laser LED
C) Photo Diode D) Any of these
D
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How is the AC compressor lubricated in an R-134a system?
A) Most compressors are a sealed unit with their own oil B) The refrigerant oil mixes with the refrigerant C) The oil moves through the system simply with the movement of the refrigerant D) Uses a sump to hold 3 to 5 oz. of refrigerant oil
Poor people today pay a greater proportion of their incomes for cereal foods (wheat, rice, corn) than they did just 30 years ago
Indicate whether the statement is true or false
Drive shaft critical speed refers to:
a. the minimum speed a drive shaft needs to spin to properly lubricate the universal joints b. the speed at which the drive shaft makes maximum torque c. the maximum speed the driveshaft should turn before it starts to distort d. twice the speed that maximum torque occurs at
El diámetro externo de un tubo de hierro de 3 pulgadas (7,62 cm) mide _____.
a. más de 3 pulgadas (7,62 cm) b. menos de 3 pulgadas (7,62 cm) c. exactamente 3 pulgadas (7,62 cm) d. Ninguno de los anteriores.