Technician A says that MIG stands for metal ignitable gas. Technician B says that gas metal arc welding (GMAW) is a more accurate term than MIG. Who is correct?

A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B


B. Technician B only

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What is the advantage of piezo actuators over solenoid actuators?

A. lower cost B. lighter weight C. faster response D. higher peak pressure potential

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Chromium-carbide precipitation is often called _____ precipitation.? ?  

A. stainless steel? B. carbon? C. hydrogen? D. carbide?

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Soil pores can be filled with air or water

Indicate whether the statement is true or false

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Which of the following systems is most suitable where a pond or lake is located fairly close to the building?

A) Air-to-air system with outdoor unit located near the water B) Water-to-air closed loop system with loop sunk in pond C) Water-to-air open loop system using the pond water D) Air-to-water system using the pond as a buffer tank

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