What components would be contained in a typical post-2007 exhaust gas aftertreatment system?
A. oxidizing catalytic converter
B. diesel particulate trap
C. muffler
D. all of the above
Answer: D
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Both four-cycle and two-cycle engines need oil added to keep them working properly
Indicate whether the statement is true or false.
The various conductors, connections, and devices found in the path of electrical flow from the source through the components and back to the source:
A. conductor B. conduit C. circuit D. breaker E. none of the above
When mounting an air handler on a concrete floor for seismic restraint, use _____
a. housed-spring devices with snubbers b. housed-spring devices with bumpers c. open-spring devices without snubbers d. open-spring devices with bumpers
If you see the label "TIG" on a welding machine, that machine is considered to be what kind of a welding
machine? a. Stick b. FCAW c. GMAW d. GTAW