A three-way catalyst is named for its ability to reduce which emissions:
A. HC, CO2, O2
B. CO, O2, NOx
C. NOx, CO, HC
D. CO2, HC, NOx
Answer: C
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____ vary with animal size and outside environmental conditions.
A. Space requirements B. Stalls C. Ventilation systems D. Air requirements
If you become a greenhouse employee, what is one of your job responsibilities?
A) Work with customers B) Maintain the grass C) Aerate the soil D) Produce out-of-season plants
The process where hydrogen ions from the root hairs replace cations attracted to soil colloids is called
____.
a. ion exchange c. cation exchange b. ion replacement d. cation replacement
The blower on a standing pilot light furnace shuts off at the end of a heating cycle, and then comes back on for a short time. This can be caused by
A) The blower moving too much air B) The fan off setting is too high C) The fan off setting is too low D) Incorrect manifold gas pressure