What is the main type of light source for most growing facilities that do not utilize solar light?
A. HID
B. LED
C. Fluorescent
D. Incandescent and HID
Answer: B
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Wood is used at the foundation level and is a common material for walls and intermediate and upper-level floor systems.
Answer the following statement true (T) or false (F)
Answer the following statement(s) true (T) or false (F)
1. The brain of the frost-free appliance is the defrost relay. 2. The defrost timer is operated by a single-phase synchronous motor. 3. The cam can be manually turned to the position so that the defrost cycle is turned on. 4. Many large commercial refrigeration units often use a separate timer clock to control the defrost cycle. 5. Defrost timers generally have several timed settings.
For the purposes of personnel hoist platform design, a guard rail is defined as a(n) _____.
a. top rail about waist height b. intermediate rail about knee height c. combination of a solid, perforated, or expanded-mesh metal barrier and toe board d. combination of a top and intermediate rail with the lower barrier and toe board
Which of these is true about tires and hot weather?
a. A small amount of air could be let out, but air pressure remains stable. b. If a tire is too hot to touch, you should drive on it to cool it off. c. You should inspect your tires every two hours or every 100 miles when driving in very hot weather.