Which of the two types of roofs (low-slope roofs and steep roofs), has a greater market share?
What will be an ideal response?
Low-slope roofs have approximately twice the market share of steep roofs.
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A DR plan addendum should include the trigger, the ____ method, and the response time associated with each disaster situation.
A. contingency B. notification C. enlistment D. training
Micro-inverters are only used in ____________________ PV systems.
Fill in the blank(s) with the appropriate word(s).
When plugging, as a general rule, the reversing contactor is of a larger size than the forward contactor because of the increased plugging current.
Answer the following statement true (T) or false (F)
How long does it take a typical tractor trailer to clear a single track? A double track?
a. It takes 7 seconds to clear a single track, and more than 10 seconds to clear a double track. b. It takes 10 seconds to clear a single track, and more than 12 seconds to clear a double track. c. It takes 14 seconds to clear a single track, and more than 15 seconds to clear a double track