Las argollas de soporte de aislamiento deben instalarse sobre centros de ______.
a. 10 pies (3,04 m)
b. 12 pies (3,65 m)
c. 15 pies (4,57 m)
d. 20 pies (6,09 m)
b. 12 pies (3,65 m)
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____________________ push buttons combine the operation of a selector switch and push button in the same unit.
Fill in the blank(s) with the appropriate word(s).
How are clamp-on ammeters used?
What will be an ideal response?
In the accompanying figure, the item identified as number 2 is the ____ pattern.
A. diamond B. hatch C. hash D. straight line
There are 3 classes of standpipe systems, and they are classified depending on who is expected to use the system and the size of the fire hoses in the system. Which of the following statements is inaccurate?
A. Class I. This system is designed to be used only by the NYFD B. Class II. This system is designed to be used by the occupants of a shelter. C. Class III. This system may be used by either trained fire fighters or by occupants of a shelter. D. Class I. fire hoses are 2½ inches in diameter; Class II. fire hoses are 1½ inches in diameter.