All of the following statements are true EXCEPT:
A. emission of fuel vapors from the fuel tank can be controlled by sealing the fuel system from the atmosphere.
B. on a hot day, gasoline in the tank contracts.
C. air must be allowed to enter the fuel tank to take the place of fuel as it is consumed.
D. the fuel tank can be vented by the gas cap or by a vent solenoid.
Answer: B
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Which of the following statements is true regarding a brazing project on a 3/16" pipe with a 3 tip, the acetylene and oxygen regulators at set at 7 psig, and begins with heating the pipe first?
A) The pipe should not be heated first while brazing. B) The acetylene regulator should be below 6 psig. C) The tip size is incorrect for a 3/16" pipe. D) The oxygen regulator should be below 6 psig.
Which products of combustion are toxic?
A. carbon dioxide B. aldehydes C. carbon monoxide D. both a and c E. both b and c
In probability, the result of an experiment is called
a. the end product b. an outcome c. the answer d. the product
________ have metal plates welded on both ends for structural attachment
A) Steel posts B) Preservative-treated wood posts C) Dimensional lumber beams D) Girders