Correct: Ask the teacher every time you want to turn the computer on or off., keep the computer and its nearby area , cover the computer when it is not in use, keep a proper distance from the monitor  , Take turns for using the Keyboard and theMouse, Give space to your classmates while they are using computers, keep your cahier at the propel height  , Incorrect: pull any wires connected to the cpu, put your finger into any slot , pull parts away from the computer, bang hard on the keyboard, eat or drink near the computer, keep your hand on the mouse continuously.,

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