The UNIX/Linux ____ command displays the system date, which the system administrator maintains.
A. today
B. sysdate
C. system
D. date
Answer: D
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What are the estimated percentage postharvest losses in developed and undeveloped countries?
What will be an ideal response?
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How does a hot-gas defrost system work?
A) Hot compressor discharge gas is routed to the evaporator. B) A warm glycol solution is sprayed on the coil. C) Gas flames provide the heat to melt the ice. D) The superheated gas leaving the evaporator is used to melt the ice.
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____ lasers are at the heart of fiber-optics.
A. Semiconductor B. Carbon dioxide C. Metal D. Water-based
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Pipe dope is used to _____
a. clean threads before assembly b. seal and lubricate threads for ease of assembly c. reduce oxidation buildup on the threads d. repair damaged threads
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