A register is a temporary storage area built into a CPU. Some registers are used internally and cannot be accessed outside the processor, while others are user-accessible. Most modern CPU architectures include both types of registers.
Answer:
Answer explained below
Explanation:
a. A country has a capital city.------------ aggregation(city is part of country)
b. A dining philosopher uses a fork. ----------- association(philosopher and fork are different entities)
c. A file is an ordinary file or a directory file. ------- generalization( both ordinary and directory files are having attributes of files)
d. Files contain records.--------- aggregation( records are part of File)
e. A polygon is composed of an ordered set of points. ----------- aggregation( points are parts of polygon)
f. A drawing object is text, a geometrical object, or a group. --------- generalization( text and geometrical objects are drawing object)
g. A person uses a computer language on a project. -------- aggregation( person and computer language are part of project)
h. Modems and keyboards are input/output devices. -------- aggregation( Modems and keyboards both are I/O devices)
i. Classes may have several attributes.------- aggregation( attributes are part of classes)
j. A person plays for a team in a certain year. ----------- aggregation(player is part of team)
k. A route connects two cities. --------- aggregation( route consists of two cities)
l. A student takes a course from a professor. ----------- association( student and course are separate entities)
Answer:
B. operating tractors and machinery
D. maintaining vehicles and equipment
E. operating irrigation (watering) equipment
F. harvesting fruits and vegetables by hand
Explanation:
A liquid-to-liquid heat exchanger uses a heat-transfer fluid that circulates through the solar collector, absorbs heat, and then flows through a heat exchanger to transfer its heat to water in a storage tank. Heat-transfer fluids, such as antifreeze, protect the solar collector from freezing in cold weather.
