Answer:
The correct option is (b) multiprogramming systems
The best I can explain: In a time sharing system, each user needs to get a share of the.... at regular intervals.
Explanation:
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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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The SQL statement that would create the GET_CREDIT_LIMIT procedure to obtain the full name and credit limit of the customer is:
GET_CREDIT_LIMIT
SELECT CUST_ID 125
FROM FIRST_NAME, LAST_NAME, CREDIT_LIMIT
WHERE LAST_NAME ="Smith"
<h3>What is SQL?</h3>
This is an acronym that means Structured Query Language that is used in handling data in a database.
Hence, we can see that from the attached image, there is a table that contains the details of customers and their various data such as their first and last names, credit limits, address, etc, and the GET_CREDIT_LIMIT procedure is shown above.
Read more about SQL here:
brainly.com/question/25694408
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