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Rashid [163]
3 years ago
12

Bubbles are seen in the sight glass of an R-12 system. Technician A says this that indicates a fully charged system. Technician

B says that it indicates an empty system, the bubbles being caused by vapor left in the system. Who is correct?
Computers and Technology
1 answer:
Genrish500 [490]3 years ago
5 0

Answer:

Technician B says that it indicates an empty system, the bubbles being caused by vapor left in the system.

Explanation:

Bubbles mean that the R-12 system is low in charge or an empty system, and the bubbles being caused by the vapor which is left in the system. The bubbles are the indication of low charge or an empty system. And hence, here Technician B seems to be the correct person, and hence the correct choice here is Technician B.

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Do rats smell good? what do you think
irina1246 [14]

Answer:

Rats are not smelly animals. They are actually extremely clean animals and should not smell bad at all. ... A sick rat odor will smell like infection. Most likely if you are smelling your rats it is due to the cage and bedding not being cleaned often enough or from using the wrong type of litter and bedding.

Explanation:

7 0
3 years ago
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Which position most commonly runs routes in order to catch a pass?.
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2 years ago
When creating a database, in which step do you add foreign keys to tables?
lana66690 [7]
Https://docs.microsoft.com/en-us/sql/relational-databases/tables/create-foreign-key-relationships 
8 0
3 years ago
Write a SELECT statement that returns one row for each customer that has orders with these columns:
d1i1m1o1n [39]

Answer:

SELECT email_address,

SUM(item_price * Quantity) AS item_price_total,

SUM(discount_amount * Quantity) AS discount_amount_total

FROM Customers c

JOIN Orders o ON c.CustomerID = o.CustomerID

JOIN Order_Items oi ON o.OrderID = oi.OrderID

GROUP BY email_address

ORDER BY item_price_total DESC

Explanation:

In this SQL statement the SELECT statement selects the following columns:

email_address

item_price

Quantity

discount_amount

There are two tables Customers and Order_Items

SUM aggregate function is used to add the values of the product of the columns discount_amount and Quantity. It is also used to get the sum of the product of two columns discount_amount and Quantity.

A new temporary column named item_price_total is used to name the sum of the product of two columns discount_amount and Quantity using AS which is ALIAS and it is used to give a name to some columns or a table.

Similarly discount_amount_total name is given to the column which calculate the sum of the product of two columns i.e. discount_amount and Quantity.

JOIN is used here to join the columns from the tables Order_items and Customers.

GROUP BY is used to group the result of rows and is used with functions like SUM. Here the rows are grouped by the email address.

ORDER BY is used to order the result. Here the result is ordered by item_price_total in descending  order.

This SELECT statement can also be written as following:

SELECT c.email_address,

SUM(o.item_price * o.Quantity),

SUM(o.discount_amount * o.quantity)

FROM customer c

JOIN Order_Items o ON o.id = c.id

GROUP BY c.email_address

7 0
3 years ago
Given the code as follows: main() { int i = 3, n; float x; x = i; n = 8 % x; } What problem will occur? Group of answer choices
Bess [88]

Answer:

A compilation error will occur.

Explanation:

The % operator does not accept a float as its right-hand operand.

7 0
3 years ago
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