Answer:
One sheave means that you are using a single drum winder. They are the worst! Double drum winders control easier, brake better and are much more efficient. They save time ( two skips or cages) and can be clutched to perform faster shift transport. A single drum is slow, unbalanced and can be a nightmare if it trips out during hoisting. If the brake system is not perfect it can be a real hairy experience. For a runaway single drum, there is no counterbalance effect. It always runs to destruction. With a double drum, the driver still has a chance to control the winder to a certain extent and he has two sets of brakes to rely on. A single sheave could also mean a shaft with a single compartment. No second means of escape unless there are ladders or stairways. Not a very healthy situation.
Those are just a few points. I am sure much more can be said in favor of a double drum winder and two or more sheaves in the headgear. Most of the shafts I have worked at have multiple winders and up to ten compartments. They all have a small single drum service winder for emergencies and moves of personnel during shift times. They are referred to as the Mary - Annes. Apparently, the name originated in the U.K. where an aristocratic mine owner named the first such winder after his mistress.
Explanation:
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Answer:
sectors
Explanation:
hard disk contain tracks which are further divided into sectors, for storage purposes.
Answer:
C. Confidentiality
Explanation:
With confidentiality, a person who intercepts messages you intend to remain private cannot read them and thus increases your document protection
Answer:
Neither confirm nor deny the information is classified.
Explanation:
This action is taken because if you answer that the information is classified, more questions will arise about why it is classified thus leaving you in an awkward situation to respond (since it is classified by something).
In the event that you answer that it is not classified, it also gives rise to the reason that the information is not of simple access also exposing you to answering more questions and having to release the confidential information.
By denying both confidentiality and non-confidentiality, you refer to ignorance of the subject by avoiding further questions about such information on the web.
to review the most important supporting points from the original information
