There Are Not Many Species of Fish Living Deep in the Oceans,but

question 6

Multiple Choice

There are not many species of fish living deep in the oceans,but the deep-sea fish occasionally pulled up by fisherman have been bizarre creatures,such as the deep-sea anglerfish with its giant fangs and bioluminescent lure.Why have these fascinating deep-sea fish never been shown live on exhibit in an aquarium?

• A)Their diet is too specialized.
• B)They are adapted to cold temperatures and total darkness.
• C)They might frighten visitors.
• D)They are adapted for high pressure,and will die at low pressure.

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Definitions:

Jump-To-Label Program

A programming construct that allows the execution sequence to jump to a specified point in the code, identified by a label.

NC Contact

An electrical contact that remains closed, allowing current to flow, until actuated open, usually referred to as a Normally Closed Contact in electrical circuits.

PLC System

A PLC system encompasses the hardware and software components of a Programmable Logic Controller, including the CPU, input/output modules, power supply, and the programming environment used to automate industrial and manufacturing processes.