New technologies can help reduce the amount of pollutants that coal can introduce into the environment. One of the most popular is coal ____
a. catalyzation c. hydrolysis
b. oxidation d. gasification
D
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A special image taken to detect the presence of excessive heat or high surface temperature is called a _____.
a. chromograph b. micrograph c. thermograph d. heatograph
?A scan tool is needed to check fluid level in transmissions without a dipstick.
Answer the following statement true (T) or false (F)
If benefits are $10,000 per year forever starting in year 1, and costs are $50,000 at time zero and $50,000 at the end of year 2, the B/C ratio at i = 10% per year is closest to:
(a) 0.93 (b) 1.10 (c) 1.24 (d) 1.73
The swelling/shrinking tendency of some silicate clay minerals is due primarily to ________
A) the movement of water molecules in and out of the interlayers of the crystal B) expansion in the width of the interlayers due to movement of larger ions such as K+ C) varying thickness of the film of water covering the external surface of the particles D) the high Mg2+ contents in the octahedral layers E) the presence of cations attracted by the negative charges on the internal surfaces