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R/Pass: This represents someone who has taken an exam and failed to reach the required standard on the first attempt (R for Referral). At the next subsequent event, they reached the required standard (Pass).
R/R/Pass: This represents someone who has taken an exam and failed to reach the required standard on both the first and second attempts (R for Referral). At the third attempt, they reached, they reached the required standard (Pass).
R/R/Referral: This represents someone who has failed to reach the required standard on three attempts. You have three attpempts to pass an examination, after which you are deemed to have failed the course.
The radiator is a square or rectangular shaped metal box that fits in front of your engine.It draws in cooler ambient air from the outside to help cool the radiator fluid. A radiator is usually made out of a metal such as aluminium, or in some cases copper, that conducts heat very well. It includes a series of tubes and fins where the fluid passes through and is cooled by air drawn into the radiator.
If the Pressure in the radiator gets two high the radiator valve in the main radiator cap is opened and allows the excess fluid to flow in to the coolant reservoir,when the pressure is low atmospheric pressure opens the return valve to allow fluid to pass back into the cooling system
The radiator cooling fan is usually located directly behind the radiator itself. Its function is to pull air through the radiator when the engine is operating at slower speeds. It may be mechanical and driven by a belt, or it may be electric and controlled by the thermostat the fan used on this engine is a viscuos fan.
Random Access Memory: This is fast memory used by computers to keep track of all open documents and programmes on a computer.
For example, as of February 2009, 1024Mb of RAM is now considered to be the absolute minimum required to run a modern OS on a computer. Perhaps 2048Mb may be a more realistic figure.
RAM is volatile memory. If you remove the power source, RAM looses any data written to it. When you open a new doucment or spreadsheet, until you save it, it only exists in the RAM. If there were a power cut, you would loose all your data and work. That is why it is important to immediately save anyting you are working on, and to continue to save it at regular intervals as you work.
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A strong, heat resistant fibre, used in the manufacture of tyres and hydraulic hoses.
In an alternating or changing electrical circuit, reactance is a measure of the opposition the circuit presents to the flow of electricity.
This same opposition in a direct or steady electrical circuit would be simply known as resistance.
This is a media player that is available for free download on the web. By media player, we mean software that can play back sound files and video.
Go here to download a free version of RealPlayer. Be careful to choose the option on the right, the free basic player. Other options are short trials. You can choose them if you plan to buy the RealPlayer plus. Otherwise, stick with the free player.
On occassion, a computer may start to behave in a strange manner, become slow in operation, may lock up or it may even become hung. To solve these problems, a reboot is required. This shuts down and restarts the computer immediately.