List five additives found in engine oil.
What will be an ideal response?
Some of the additives found in engine oil are:
1. Pour-point depressants that allow the oil to flow in very cold weather
2. Corrosion and rust inhibitors that help the oil to stick to metal surfaces
3. Antifoam additives
4. Friction modifiers
5. Oxidation inhibitors
6. Antiwear additives
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What term is used to describe the tendency of an object in motion, to want to stay in motion?
A. Static friction B. Dynamic friction C. Kinetic energy D. Inertia
When the stem of a butterfly valve is parallel to the line of flow, the valve is _____.
a. closed b. half-closed c. open d. dysfunctional
What does the term ‘stray voltage’ describe?
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. To the untrained eye, thickly made pigs are easier to discern. 2. A light-muscled, fat pig is widest at the top of the hams. 3. A market pig can be very muscular and still have too much fat. 4. The purpose of producing market hogs is to produce meat. 5. Structural correctness is unimportant in the selection of market animals. 6. A pig that has less than 0.6-inch of belly fat is considered unacceptable.