What is an aerial lift?
What will be an ideal response?
Aerial lifts are vehicle-mounted mechanisms used to elevate workers to locations above the ground that would otherwise be inaccessible to them.
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During a busy hour, the number of calls per hour for each of the 12 cells of a cellular cluster is 2220, 1900, 4000, 1100, 1000, 1200, 1800, 2100, 2000, 1580, 1800 and 900. Assume that 75% of the car phones in this cluster are used during this period and that one call is made per phone.
(a) Find the number of customers in the system. (b) Assuming the average hold time of 60 seconds, what is the total Erlang value of the system? (c) Find the reuse distance D if R = 5 km.
A pressure setting that is too high results in ____.
A. an incomplete cut B. the top edge of the plate being melted or rounded off C. gouges in the side of the cut D. the sides of the kerf being slightly dished
The more windings in the coil, the fewer inductance that occurs.
Answer the following statement true (T) or false (F)
The concrete placement device called a tremie is also described as a _____
a. spout b. giraffe's neck c. drop chute d. elephant trunk