Technician A says that exhaust manifolds can be made from hard plastic or aluminum. Technician B says that many intake manifolds have an EGR valve that regulates the amount of recirculated exhaust that enters the engine in order to increase NOx emissions. Who is right?
A) Technician A only B) Technician B only
C) Both technicians A and B D) Neither technician A nor B
D
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Since 1990, there has been an increase in carpooling and public transportation
a. True b. False Indicate whether the statement is true or false
This diagram shows a molecule of ________
A) Methanol B) Propane C) Ethanol D) Gasoline
This is water of a quality that is suitable for drinking.
What will be an ideal response?
An installer compares the areas of a circular duct and a rectangular duct. The 6-inch by 5-inch rectangular duct has an area of 30 sq in. The 5 1/2-inch diameter circular duct has an area of about 24 sq in. What is the ratio of the area of the circular duct to the area of the rectangular duct?
Fill in the blank(s) with the appropriate word(s).