During a planned maintenance call, technicians should check the power wiring to make sure:
A) Any resilient mounted motors are isolated from the ground.
B) The unit is grounded.
C) The unit is not grounded.
D) A heavy wire runs from both L1 and L2 to the equipment ground.
B
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For loading and unloading equipment, a trailer should be parked _____.
a. with the towing vehicle uphill b. on level ground c. with the towing vehicle downhill d. and unhitched from the towing vehicle
Which of these organizations offer opportunities to learn about animal science, raise animals as projects, and go on field trips to animal facilities?
A) American Kennel Club B) American Humane Society C) 4-H Clubs D) Animal Liberation Front
Conservation tillage systems are said to have all but one of the following advantages over conventional tillage systems
A) It involves the use of less toxic weed control practices. B) It reduces soil erosion. C) Its labor and energy requirements are lower. D) It encourages higher microbial population numbers in the soil. E) It increases the hydraulic conductivity of the soil.
Which of the following is (are) major sources of the carbon dioxide now being added to the atmosphere in excess of the amount taken out by plants?
A) loss of soil organic matter B) destruction of natural forests C) burning of fossil fuels D) all of the above E) none of the above