Ammonium fixation would be expected to be greatest in soils containing a lot of ________
A) Rhizobium bacteria
B) Frankia
C) vermiculite
D) iron oxides
E) both C and D
C
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What can cause leakage and make the valve difficult to open or close?
A) Excessive force when opening or closing a valve B) Throttling a valve that is not designed for throttling C) Failure to clean valve stems D) Improper closing of a valve on a high-pressure line
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What is the heart of the refrigerant system?
What will be an ideal response?
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____________________ irrigation can be used where it is not possible to surface irrigate
Fill in the blank(s) with the appropriate word(s).
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What should always be used to adjust fan belts?
A. torque wrench B. fish weight scale C. belt dressing spray D. belt tension gauge
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