Why can't water be used to put out flammable liquid fires?
A) Most flammable liquids are lighter than water
B) The oxygen in water feeds the fire
C) Water converts to steam and adds to the hazards
D) Water's flashpoint is too low
A) Most flammable liquids are lighter than water
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Which of the following provides a curved surface for the cable to follow as it passes from the tray?
a. Swivel plate b. Splice plate c. Dropout plate d. Barrier plate
In a circuit with two or more resistances in parallel, the total resistance in the circuit is the sum of the resistances in the circuit.
Answer the following statement true (T) or false (F)
What is a diaphragm type of expansion tank?
What will be an ideal response?
How is ultrasound used in leak detection?
A) It amplifies the sound of a leakage. B) It makes exiting gases visible. C) It causes the formation of bubbles near a leak. D) It allows for a visual close-up of the system.