【题目】 Middleware has mechanisms to support controlled interaction throug h

1、[多选题]In electronic commerce,information search and discovery services i nclude＿＿＿＿＿＿＿＿＿＿＿＿＿.

• A、directories
• B、software agents
• C、search engines
• D、information filters
• E、electronic catalogs

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2、[多选题]The tools which Programming software usually provides include:

• A、interpreters
• B、linkers
• C、debuggers
• D、text editors
• E、compilers

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3、[多选题]Middleware has mechanisms to support controlled interaction throug h

• A、coordination
• B、persistent storage
• C、communication
• D、naming

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4、[多选题]An asleep state is

• A、a low power standby mode
• B、indicated by the indicator light putting out
• C、used for saving energy
• D、used to lessen wear-and tear on the computer

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5、[多选题]Static graphics include.

• A、photographs
• B、movies
• C、pictures
• D、animators

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