【单选题】【消耗次数：1】
法兰是法兰连接中的一个主要零件。法兰连接是由一对法兰、密封垫片和螺栓、螺母、垫圈等零件组成的一种不可拆连接。（ ）
①
正确
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错误
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相关题目
【单选题】
下列工艺图流程图例中，表示采用法兰连接方式的是( )。
①
<img src="20200602/1591087035596894.png" title="1591087035596894.png" alt="D.png"/>
②
<img src="20200602/1591087021175081.png" title="1591087021175081.png" alt="B.png"/>
③
<img src="20200602/1591087015869610.png" title="1591087015869610.png" alt="A.png"/>
④
<img src="20200602/1591087029366284.png" title="1591087029366284.png" alt="C.png"/>
随机题目
【单选题】
When he was a boy,he used to go there and watch________.
①
to repair bicycles
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bicycles to be repaired
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bicycles being repaired
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repairing bicycles
【单选题】
I didnt hear the phone. I________asleep.
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must be
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must have been
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should be
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should have been
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We are confident that relations between ?North Korea and South Korea _______ through further?? efforts to reduce the long-term hostile ?attitudes.
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are being improved
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will be ?improved
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have been improved
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are improved
【单选题】
Yourroomis______mine.
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twice as large than
②
twicethesizeof
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biggertwicethan
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astwicelargeas
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The old farmer,________the badly injured and burnt soldier,came out of the burning farmhouse,calling continuously for help.
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supporting
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having supported
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being supported by
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being supported
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did
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are doing
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have done
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his done
【单选题】
As I will be away for at least a year,Id appreciate________from you now and then so that I can know how everyone is getting along.
①
having heard
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to hear
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hearing
④
being heard
【单选题】
The dog,________,will be made a good watchdog.
①
to train properly
②
being trained properly
③
properly to train
④
trained properly
【单选题】
—Have you searched the sitting room for your key?
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①
which
②
where
③
that
④
as