With direct drive, the driving machine and the driven machine may be mounted on the same shaft, or a(n) ____ may be used.
A. reducer
B. pulley
C. shaft coupling
D. gear shaft
Answer: C
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If the attempt to synchronize the motor is not successful, the stop button is pressed and the starting cycle is ____.
a. repeated b. prolonged c. redefined d. reset
The system known as binomial nomenclature was developed in the:
a. 18th century c. 16th century b. 17th century d. 21st century
The way in which the conventional building process has worked makes it both ________ and ________ expensive
Fill in the blank(s) with correct word
At the battle of Marathon in 490 BCE,
a. an enormous Persian army crushed the tiny forces of Athens. b. the Athenian navy defeated a much larger force of Persian ships. c. 25,000 heavily armed Spartan hoplites liberated Athens from a Persian siege. d. ten thousand heavily armed Athenian hoplites defeated the Persian force.