A manufactured air duct that meets all 15 UL 181 tests is classified as:
A) A flexible air duct.
B) Flexible air plenum.
C) Either a flexible air duct or a flexible air connector.
D) A flexible air connector.
A
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A(n) ____ is the use of plants in a positive space-dominant, vertical plane
a. living installation c. oriented planting b. green wall d. “free” planting
Technician A says that removing the plug wire from a spark plug while the engine is running could damage ignition system components. Technician B says that grounding a spark plug wire while the engine is running could damage ignition system components. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
In testing DIACs with an ohmmeter, ____ resistance in either direction indicates that the device is not opened (defective).
A. zero B. high C. low D. infinite
The frequency of motor lubrication depends on the type of bearing, motor application, and _____.
a. applied voltage b. service environment c. frequency of stops and starts d. motor size