The most effective reinforcement schedule for maintaining behavior at high levels is the
variable-ratio schedule.
Indicate whether the statement is true or false.
T
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In a dimetric drawing, how many of the normal surfaces have equal angles between them?
A. zero B. one C. two D. three
Answer the following statements true (T) or false (F)
1. Good indoor environmental quality results in real economic benefit from productivity. These benefits should be included in life-cycle cost analysis. 2. Reducing load will reduce construction cost through smaller HVAC systems. However, there will generally be an offsetting cost for features required to effect the load reduction. 3. A proposed air conditioning system costs $3,000/ton. The capacity of a 1000-ton system is reduced by 50 tons through load management. The cost savings in HVAC will be $150,000. 4. If the average cost of electric is $0.10/kWh, and a cooling system uses 1.6 kW per ton of cooling, the cost of one ton-hour will be $0.10 × 1.6, or $0.16 per ton-hour.
Which type of fire extinguisher medium is capable of killing an engine runaway while causing minimal damage and mess inside the engine?
A. Water B. Carbon dioxide C. Dry chemical D. Soda-acid
A multi-zone system allows a wide range of temperatures in different zones supplied by a single unit by
A) providing a blend of always available heated and cooled air to any zone B) using multiple small compressors C) reheating cooled air using strip heaters D) piping air from cool zones to warm zones