Technician A says that HH-ESTs, OEM software, and a DLC can be used to access a J1939 data bus. Technician B says that a generic HH-EST loaded with a general heavy duty reader software can be used to program customer data to controller modules on the data bus.Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B
Answer: A
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____ is a physical description of land surface showing its variation in elevation, known as relief, and locating other features.
A. Topology B. Topography C. Geography D. Landscape
At -12°C, refrigerant R-134a has vf = 0.0007498 m3/kg and vg = 0.1068 m3/kg. 3 kg of a saturated mixture of R-134a at -12oC has a quality of 0.93. Determine the specific volume and the total volume of the R-134a.
Given: vf = 0.0007498 m3/kg; vg = 0.1068 m3/kg; x = 0.93; m = 3.0 kg What will be an ideal response?
In hot, humid climates, the vapor flow in conditioned buildings is generally from
A) the outside to the inside of the envelope. B) the inside to the outside of the envelope.
A line-sensing control uses a mechanical thermostat or electrical controller to measure the _____.
a. actual pipe temperature b. ambient temperature surrounding the pipe c. estimated pipe temperature d. heat levels surrounding the pipe