The biggest advantage centrex offers is:
A) the customer's ability to provision his or her own circuits
B) reduction of maintenance costs
C) improved efficiency of business
D) insurance against purchasing obsolete equipment
E) all of the above
B
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A transformer can be used without any additional devices to step-up 12V DC to 24V DC.
Answer the following statement true (T) or false (F)
Use the accompanying figure. Angle A is 19o and angle B is 25o. Compute the angle of tilt and round to the nearest minute.
A. 30o06' B. 32o32' C. 33o33' D. 35o16'
A series circuit has two 10-ohm bulbs. A third 10-ohm bulb is added in series. Technician A says that the three bulbs will be dimmer than when only two bulbs were in the circuit. Technician B says that the current in the circuit will increase. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Using the equation: head = (?P × 144) ÷ D, calculate a pump's head pressure with a measured pressure drop
across the pump of 9.4 psi. Assume water has a density of 62.4 pounds per cubic foot. a. 4.07 b. 21.7 c. 0.047 d. 18.45