The removal of combustion gases by natural draft is made possible by _____
a. heating of the flue gases
b. cooling of the flue gases
c. using a very large diameter vent
d. providing outdoor air directly to the burner
a
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When rigging a load, the center of gravity must be placed _____.
a. directly above the hook b. directly below the hook c. between the hook and the nearest outrigger d. between the hook and the load destination
Assignable cause is best described as:
a. the frequency or arrangement of data that may show repetition of numerical values. b. a cause of variation or special cause. c. a quality characteristic that varies or conforms to desired specifications. d. a cause of variation that is small in magnitude and difficult to identify; also called random or common cause.
Terrariums are groupings of plants growing inside a glass or plastic container
Indicate whether the statement is true or false
Which of the following flip-flops have synchronous inputs?
A) S-R flip-flop B) 7474 D-flip-flop C) NAND flip-flop D) all of the above