What type of piston is best at overcoming engine slap?
A. Mexican hat crowned pistons.
B. Aluminum pistons
C. Forged steel trunk type pistons.
D. Cam ground pistons.
Answer: C
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A(n) ____________________ is a sensor that the computer sends a voltage to and reads the voltage that comes back.
Fill in the blank(s) with the appropriate word(s).
Emissions of heat-trapping carbon dioxide (CO2) reached an all-time high of 36.9 gigatons in 2014, a 2.5% increase over 2013. The International EnÂergy Agency said this further reduces the chance that the world could avoid a dangerous rise in global average temperature by 2020. (a) If the discharge of CO2 continues at the same 2.5% rate per year for the next 6 years, how many gigatons will be released in 2020, and (b) what will be the total percentage increase between 2014 and 2020?
What will be an ideal response?
Typically, the zone control valve not only opens to allow water to flow to the zone, but also turns on:
A) Circulator pump. B) The boiler. C) The blower. D) The fan coil unit.
Which of the following descriptions is the best definition of the term bonding (bonded)?
A. Connected to a grounded panelboard enclosure B. A device that makes a connection to the earth C. Driving a local ground rod at equipment D. The permanent joining of metallic parts to form an electrically conductive path