Which type of fire extinguisher is suitable for extinguishing all four types of fire?

A. Water
B. Carbon dioxide
C. Soda-acid
D. Dry chemical


Answer: D

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Category 1. AC/DC general-use snap switches may control tungsten filament lamp loads not to exceed the ampere rating of the switch at _________________________ volts when marked with the letter T.

Fill in the blank(s) with the appropriate word(s).

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Routine soil testing on a regular basis allows landowners to monitor most changes in soil quality

Indicate whether the statement is true or false

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Where is the force of magnetic lines strongest in a bar magnet?

A) In the middle of the magnet B) At each end C) Only at the north pole of the magnet D) None of these

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A relay whose contacts are touching when current is applied to the coil is

A) an NC relay. B) deenergized. C) a NO relay. D) all of the above.

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