What are the two types of actuator used in electrohydraulic injectors?
A. Mechanical and solidstate.
B. Solenoid and servo.
C. Servo and piezoelectric.
D. Solenoid and piezoelectric.
Answer: D
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What international event contributed to a flowering of English nationalist spirit?
A. the defeat of the Spanish Armada B. the seven years’ war C. the discovery of North America D. the creation of the Dutch East-Indies Company E. the settling of Jamestown
Residential buildings consume approximately ____% of the energy produced in the United States for heating, cooling, cooking, water heating, and operating electrical devices.
A. 5 B. 12 C. 17 D. 22
If flue gases are not vented properly, carbon monoxide poisoning could result.
Answer the following statement true (T) or false (F)
More than one evaporator coil circuit is used when ____.
A. the evaporator is located outside the conditioned area B. there would be excessive refrigerant pressure drop in the coil circuit C. a distributor would not be practical D. a slant coil is at an angle more than 60°