This line ---------------- represents a _____ line.
A. phantom
B. object
C. center
D. hidden
Answer: D
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Most small wind turbines use a permanent ____.
a. diesel generator b. portable generator c. magnet generator d. ac generator
All of the following statements are true EXCEPT:
A. accessories often cause noises that can be mistaken for other problems. B. a fan clutch on a coolant pump can cause a noise that sounds serious and is hard to pinpoint. A stethoscope can be used to listen to the noise. C. to isolate noises from defective belt-driven parts or accessories, disconnect the drive belt and run the engine for a short time at idle. D. belts are a common source of noise.
Growth regulating substances in plants are called _____
A) particle streams B) nitrates C) residues D) hormones
An advantage of connected greenhouses is that they are more efficient because workers and equipment can move throughout the greenhouse with ease
Indicate whether the statement is true or false