Plant flowers that bloom _____ offer the best display of color
A) at the same time
B) alternately
C) through different seasons
D) in spring and summer
A
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A three-wire control circuit uses momentary contact, start-stop stations, and a holding circuit interlock connected ____ with the start button to maintain the circuit.
a. in tandem b. in parallel c. alternately d. in series
Why should an acetylene cylinder always be used in the upright position?
A. Acetylene will not ignite B. Liquid acetone will drain through hoses C. Acetylene sits in the top half of the tank D. Pressure gauges will not read properly
On a domestic refrigerator equipped with a defrost cycle that depends on the run time of the compressor, what starts the defrost cycle?
A. cooling thermostat B. compressor C. defrost timer D. door switch
CO? reading inside buildings that are greater than atmospheric is the result of ____________
A. heating equipment B. off gassing of carpets and furniture C. oil based paint D. building occupants exhaling