When plants are grown in a field, then dug up and sold, what is wrapped around the roots to keep them moist and bound together to prevent injury?
a. netting c. burlap
b. wire d. newspaper
C
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Melting alloy and bimetallic overload relays are designed to _____.
a. trip an alarm signal b. keep the motor operating in the event of a sustained overload c. react to changes in the motor load current d. divert excessive current to prevent overheating
When compared to beef cow herds or ewe flocks, the investment required for a dairy herd
is: A. about the same B. lower C. higher
Avoid exposing a lead-acid battery to _____
a. temperatures below 50°F (10°C)
b. sparks or arcs of any type
c. more than two hours of use each day
d. nitrogen
When comparing the safety of LEDs versus incandescent lamps used as brake lights, which of the following is correct?
A. LEDs require more maintenance B. cost of LEDs is greater over lifetime of chassis C. LEDs illuminate more rapidly D. LED tail lights consume more current