【单选题】【消耗次数：1】
一个完整的故障诊断专家系统的结构包括（）
①
控制部分
②
推理机制
③
数据库
④
人机接口系统
⑤
知识库及知识库的管理
⑥
以上选项都选
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相关题目
【单选题】
专家系统的正向推理是以（ ）作为出发点，按照一定的策略，应用知识库中的知识，推断出结论的过程。
①
需要解决的问题
②
已知事实
③
证明结论
④
表示目标的谓词或命题
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—Excuse me, do you know _______?—Yes. Next Friday.
①
when will the volunteers come back
②
when the volunteers will come back
③
how will the volunteers come back
④
how the volunteers will come back
【单选题】
More and more children are interested in blind boxes _______ they wonder what is inside.
①
so
②
because
③
unless
④
though
【单选题】
The boy was seen ______ the piano at 9 yesterday evening.
①
to play
②
play
③
playing
④
played
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I _______ sleep very well, but then I started doing yoga and it really helps.
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didn’t use to
②
used to
③
was used to
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wasn’t used to
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The cover of the book _______ comfortable. It’s made of silk.
①
tastes
②
feels
③
looks
④
sounds
【单选题】
Last month, the little girl _______ well enough by the neighbors while her parents were volunteering.
①
is cared for
②
was cared for
③
will be cared for
④
cares for
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______ a year does your school have sports meeting?Twice a year.
①
How often
②
How soon
③
How long
④
How many times
【单选题】
Don’t worry. We have _______ to finish the work carefully.
①
enough time
②
less time
③
little time
④
few times