Three common types of antifreeze are salts, glycols, and ____________________.
Fill in the blank(s) with the appropriate word(s).
alcohols
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The tendons used for prestressing a PT concrete slab-on-ground generally consist of
A) two-strand tendons, each strand made of seven wires. B) a single 1/2-in.-diameter, seven-wire strand. C) a single 1/2-in.-diameter, nine-wire strand. D) three -strand tendons, each strand made of seven wires. E) none of the above.
Concerns about which of the following have adversely affected the image and consumption of beef?
A. cholesterol B. BSE C. fat D. all answers are correct
Answer the following statement(s) true (T) or false (F)
1. The on-delay relay is often referred to as DODO. 2. Pneumatic timers are affected by variations in ambient temperature or atmospheric pressure. 3. Pneumatic timers are adjustable over a wide range of time periods. 4. Instantaneous contacts change their positions immediately when the coil is energized and change back to their normal positions immediately when the coil is de-energized. 5. Clock timers are generally used to operate several switches.
A vector, as defined in engineering, must possess both magnitude and _____.
A. volume B. size C. direction D. length