Technician A says that if a PCV valve rattles, then it is okay and does not need to be replaced. Technician B says that if a PCV valve does not rattle, it should be replaced. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
B
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What term is used to describe a gear that permits zero lash between intermeshing gears and also eliminates the risk of gears radially loading each other when at operating temperature?
A. concept gear B. helical gear C. amboid gear D. spur gear
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As productive land becomes scarce among the global resources, food production will become more
concentrated on which environment?
a. inland river c. tropical b. coastal d. ocean
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Passerines are the largest group and include the _____
a. cockatoos b. hookbills c. parrots d. song birds
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Adult pigs have long, sharp teeth called needle teeth
Indicate whether the statement is true or false
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