18.Most database software includes tools to create all of these EXCEPT ____. ( )
A. electronic forms
B. insight lists
C. queries
D. reports
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4.Most computers include a CD drive or DVD drive that uses a magnet to read data stored on plastic-coated CDs and DVDs.} ( )
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2.Digital audio is music, speech, and other sounds represented in ____ format for use in digital devices. ( )
A. analog
B. both a. and b.
C. neither a. nor b.
D. binary
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25.Software applies ____, also called algorithms(算法), to process data. ( )
A. procedures
B. objects
C. rules
D. arithmetic
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42.Screen brightness can be measured as ____. ( )
A. contrast ratio
B. either a. or b.
C. luminance
D. neither a. nor b.
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87.{ messaging is a form of quick communication in which a message is typed, sent to one or more people, and received instantly. ( )
A. Internet
B. Instant
C. IP
D. Chat
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43.The system unit contains storage devices, a power supply, and the computer’s main circuit board, called a ____. ( )
A. any of the above
B. motherboard
C. mainboard
D. system board
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92.Microsoft ____ is one of the most well-known databases for personal computers. ( )
A. Visio
B. Word
C. Onenote
D. Access
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48.Some printers are capable of printing on both sides of the paper, a feature referred to as ____ printing. ( )
A. high efficiency
B. double
C. multiplex
D. duplex
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17.____ software helps you learn and practice new skills. ( )18
A. Project Management
B. Accounting
C. Presentation
D. Educational
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