Buffer strips principally function in nutrient management to:
A) recycle non-renewable nutrients.
B) enrich the soil with nutrients that are needed for optimum plant growth.
C) slow the movement of potential pollutants to the groundwater.
D) prevent the transport of nutrients from fields to streams.
E) all of the above
D
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What is the compression ratio of a compressor with a suction pressure of 120 psig and a discharge pressure of 480 psig?
A) (480 - 15 ) / (120 - 15 ) = 465 / 105 = 4. 4 to 1 B) (480 + 15 ) / (120 + 15 ) = 495 / 135 = 3. 67 to 1 C) 480 / 120 = 4 to 1 D) (480 ? 120 ) / (480 + 120 ) = 57,600 / 600 = 96 to 1
The following statements are all correct EXCEPT ________
A) Waste-spark systems use a signal from the PCM once the engine is running. B) Waste-spark systems do not need a timing signal from the PCM when cranking the engine. C) No ignition system uses the PCM to control ignition timing. D) Up-integrated ignition controls use the PCM to control ignition timing.
How does an oil acid test kit indicate the presence of acid?
A) By a color change B) The word "acidic" appears on the test strip. C) The test kit produces a strong pungent odor. D) The liquid in the sample tube boils.