Humidity in the air represents heat that makes humans uncomfortable in hot weather. What causes this heat factor present in humidity?
A) Hot air coming down from the attic B) Latent heat in the water vapor
C) Sunlight D) Lack of proper airflow
B
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What is a blind hole?
a. A hole that goes all the way through the part. b. A hole that is always made from the backside of the part. c. A hole that only goes partially through the part.
In order for combustion to occur, there must be _____.
a. fuel, CO2, and ignition b. radiation, conduction, and convection c. fuel, oxygen, and aldehydes d. fuel, ignition, and oxygen
Which type of multi-orifii injector nozzle sometimes uses an accumulator in place of a leakoff circuit?
A. pencil injectors B. valve closes orifice (VCO) C. high spring injectors D. low spring injectors
Specifications for an aircraft bolt require that the ultimate tensile strength be at least 18 kN. It is known that 10% of the bolts have strengths less than 18.3 kN and that 5% of the bolts have strengths greater than 19.76 kN. It is also known that the strengths of these bolts are normally distributed.
a. Find the mean and standard deviation of the strengths. b. What proportion of the bolts meet the strength specification?