Why can oil furnaces operate at higher efficiencies than gas furnaces without condensing water in the heat exchanger or vent?
A) Oil furnace heat exchangers are inherently more efficient
B) Unlike gas, no water is mixed with the oil during the combustion process
C) Oil furnaces burn hotter
D) The flue gas contains only half as much water as flue gas from a gas furnace
D
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Large-scale ____ projects were begun during the medieval era to benefit large groups of people or the general population.
A. military engineering B. chemical engineering C. systems engineering D. civil engineering
Using the modified X-method of tire rotation on a front wheel drive vehicle, where should the left front wheel be placed?
A) Right rear B) Right front C) Keep it at the left front D) Left rear
The two rack and pinion steering gear adjustments include ________
A) Worm bearing preload and tolerance adjustment B) Stub shaft endplay and sector shaft preload C) Sector shaft and stub shaft preload D) Pinion bearing preload and rack support
Career opportunities as a construction professional would not include ________
a. Estimator b. Scheduler c. Field superintendent d. Specification writer e. Purchasing agent