【单选题】【消耗次数:1】
粒径大于( )mm的骨料称为粗骨料,俗称石。
4.5
4.75
5.5
5.75
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相关题目
【单选题】 粒径小于( )mm的骨料称为细骨料,俗称砂。
①  4.5
②  4.75
③  5.5
④  5.75
【单选题】 混凝土拌合物的坍落度试验只适用于粗骨料最大粒径(????)mm者。
①  ≤40?
②  ≤20
③  ≤80
④  ≤30
【单选题】 混凝土拌合物的坍落度试验只适用于粗骨料最大粒径( )mm的混凝土。
①  ≤80
②  ≤60
③  ≤40
④  ≤20
【单选题】 通常将岩石颗粒粗骨料称为( )。
①  卵石
②  石子
③  碎石
④  砂子
【单选题】 细骨料的粒径通常小于( )。
①  5mm
②  4.75mm
③  4mm
④  3.75mm
【判断题】 粗骨料和土。()
①  正确
②  错误
【判断题】 泵送混凝土输送管的选择主要取决于粗骨料粒径和生产率要求。
①  正确
②  错误
【单选题】 将粗骨料装入骨料预冷罐,用低温水浸泡或循环冷却,或者在通过冷却廊道输送骨料的胶带表面淋洒低温水的骨料预冷方法是().
①  A.水冷法
②  B.风冷法
③  C.真空汽化法
④  D.液氮预冷法
【判断题】 水、水泥、砂(细骨料)、石子(粗骨料)是普通混凝土的四种基本组成材料。( )
①  正确
②  错误
【单选题】 一般情况下,泵送混凝土的粗骨料粒径应控制在 D(D为管径)范围内,且最大粒径不得超过规范的规定。( )
①  0.2~0.3
②  0.3~0.4
③  0.4~0.5
④  0.5~0.6
随机题目
【单选题】 It was_____ back home after the experiment.
①  not until midnight did he go
②  until midnight that he didn’ t go
③  not until midnight that he went
④  until midnight when he didn’ t go
【单选题】 The truck driver was fined for exceeding the speed ____.
①  range
②  limit
③  rule
④  regulation
【单选题】 America will never again have as a nation the spirit of adventure as it ____ before the West was settled.
①  could
②  did
③  would
④  was
【单选题】 I charge the man____ receiving stolen goods.
①  in
②  with
③  at
④  on
【单选题】 The ____ problem of bring a spaceship back from the moon has been solved.
①  technical
②  technological
③  technique
④  technology
【单选题】 The boy has admitted to ____ the window while playing football yesterday.
①  breaking
②  having been broken
③  break
④  be breaking
【单选题】 We expect Mr. White will ____ Class One when MissJane retires.
①  take over
②  take up
③  take off
④  take to
【单选题】 My pain ____ apparent the moment I walked into the room, for the first man I met asked sympathetically: “Are you feeling all right?”
①  must be
②  must have been
③  had been
④  had to be
【单选题】 ____ there is little we can do to modify the weather, we can at least know what kind of weather to expect.
①  Since
②  When
③  While
④  Unless
【单选题】 None of us can work out the puzzle, _____ we?
①  can
②  can’ t
③  do
④  don’ t