List at least three things to remember when dealing with hydraulic leaks.
What will be an ideal response?
? Hydraulic oil from a running system may be hot enough to burn skin,
so try to avoid direct contact until you are sure it is safe.
? If a hydraulic oil puddle is uncontrolled, it can cover a much larger area
than you might think. There are special barrier and damming devices that
can help to control large spills.
? Leaks that generate an oil mist can also be a fire and breathing hazard.
Most hydraulic oils are stable and take a lot of heat to ignite, except when
dispersed as a mist in the air.
? Cleaning up hydraulic oil usually requires the use of some type of
absorbing medium.
? You do not want to let hydraulic oil go down any drains connected to the
sewer system as it is a contaminant and will wreak havoc at water
treatment facilities or any natural waterways it might reach.
? When finished with the cleanup, make sure you dispose of any oil and oil
soaked materials properly.
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As industrial plants began to implement PLCs in a distributive or modular approach to controlling equipment, it was necessary to develop fast, ____________________, and reliable communications schemes to tie the various PLCs and their systems together.
Fill in the blank(s) with the appropriate word(s).
The ideal potted mum should have about _____ flowers per pot
A) 10-12 B) 13-14 C) 8-12 D) 15-20
An acute symptom of ____ results in downturned leaves and/or leaves that appear darkened
a. waterlogging c. under-watering b. temperature extremes d. a high pH level
A resistive touch screen can be made with four, five, or eight wires.
Answer the following statement true (T) or false (F)