The reason many installations utilize a straight main trunk line with flexible duct runs to the individual register boots is to ____.
A. eliminate the expense of custom-made duct sections
B. reduce excessive noise
C. speed up the installation process
D. all of the above
Answer: D
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The effect of soil organic matter on the amount of water available to plants is due to organic matter influence on total soil porosity as well as to the water-supplying power of the soil organic matter
Indicate whether the statement is true or false
Axle windup is most often a problem with _________
A) Front-wheel drive vehicles B) Vehicles with a live rear axle C) Both A and B D) Neither A nor B
Assume that an op-amp has a differential voltage gain of 1800 and a common-mode voltage gain of 0.02. The CMMR for the op-amp is
A) 18,000 B) 900,000 C) 90,000 D) 180,000