Natural gas deposits are classified according to their accessibility. What is one characteristic used to classify these deposits?
a. Unconventional natural gas is easily extracted.
b. Conventional natural gas is usually associated with oil deposits.
c. Unconventional natural gas forms under the same conditions that have led to petroleum formation.
d. Thermogenic methane is associated with unconventional natural gas, but not conventional natural gas.
B
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Slotted floors for confinement barns should be made of slats that are _____ inches wide
a. 6 to 12 c. 10 to 16 b. 8 to 14 d. 12 to 18
_____ were first imported to the U.S. in the late 1800s.
Fill in the blank(s) with the appropriate word(s).
What type of vent is used with 80 percent Category I furnaces?
A) 90 percent efficiency furnaces do not require a vent. B) PVC C) Type B double-wall gas vent D) Single-wall stainless steel
What is the SI unit for gravitational potential energy?
a. Newtons b. Watts c. Kelvins d. Joules