单项选择题
Which of the following needs to be recycled due to dangerous amounts of gas contained inside its housing？（）
A.CRT B.Toner C.Surge suppressor D.LCD
单项选择题 Whichofthefollowingwillallowmultipleoperatingsystemstorunononeworkstation？（）
单项选择题 Auserreportsthattheircellphonebatteryisdeadandcannotholdacharge.Whichofthefollowingshouldbedonewhendisposingoftheoldbattery？（）
单项选择题 Whichofthefollowingistherecommendeddisposalmethodforusedcomputers？（）
