Technician A says that a dry chemical fire extinguisher can be used on class A, B and C fires. Technician B says that the chemical used in these fire extinguishers can be corrosive. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
C
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X-bar is defined as:
a. An unbiased smaller sample of a larger population used to represent the entire population. b. the average of a series of numbers. c. the average of the subgroup averages. d. a simple tool designed to quantitatively monitor important characteristics of a process.
Conduit systems must be completely installed before the electrical conductors are permitted to be pulled in.
a. True b. False
Which of the following is NOT a correct step in the placement of troubleshooting brackets?
A) Generally, the right brackets are placed on the left side of output blocks that are not operating. B) Start at each left bracket and move to the left until normal operation is observed. Place a left bracket ( [ ) to the right of the block where a normal output was detected. C) Record all symptoms and list conditions that vary from normal operation. Locate abnormal operation points on the system block. D) Place a right bracket ( ] ) after each abnormal block.
Material conservation, better insulation, and a reduction in both energy needs and energy usage are benefits provided a builder or homeowners from what?
A) ORNL's Building Envelopes Program B) LEED for Homes case study C) Life-cycle analysis D) EnergyGuide label