Which of the following occurs as soon as a heating thermostat is closed?
a. The flame rollout switch opens.
b. The blower fan starts
c. The inducer fan starts.
d. The inducer pressure switch opens
c. The inducer fan starts.
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What is the computer device that converts digital signals to analog format for transmission through the phone lines?
A. analog to digital converter (ADC) B. output drivers C. modem D. CPU
Ultraviolet light assists reptiles in the assimilation of _____
a. oxygen b. vitamin D3 c. protein d. free radicals
Determine the resultant vector in standard position for the following vectors and express the magnitude to 3 significant digits and the angle to the nearest tenth degree. 
= 488 km at 126.0°, 
= 632 km at 180°, 
= 834 km at 88.8°.
Fill in the blank(s) with the appropriate word(s).
What is a thru-plate connection? Draw a sketch if necessary to explain this.
What will be an ideal response?