For a year or so after clear-cut (even-aged) harvesting large areas of mature forest, the streams draining the watershed can be expected to carry ________ than before the harvest
A) much less calcium and other cations
B) a much greater total nitrate load
C) away enough pollutants to reduce the toxic load to levels lower
D) much less water
E) all of the above
B
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The term viscosity index refers to _____.
a. the lowest temperature at which an oil flows freely b. how the viscosity of oil varies with temperature c. the temperature index at which oil gives off ignitable vapors d. the service life of various oil and grease products
Technician A says that tires and wheels are the most common source of low frequency vibrations. Technician B says that engine or transmission mounts are most common source of low frequency vibrations. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
What controls when Schrader valves open and close?
A) They open when hoses with depressors are connected to them. B) They open and close by a wireless Bluetooth signal. C) They open every time the unit starts up and close immediately upon shutdown. D) They open when they are backseat cracked and close when they are backseated.
After a hazard review is completed, _____ determine(s) the classification of a confined space as a nonpermit or permit-required confined space.