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【多选题】
在泥浆护壁成灌注桩施工中,正确的做法是( )。A.
钻机就位时，回转中心对准护筒中心
B.
护筒中泥浆应地下水位1m以上
C.
后，保证沉渣不超过规定要求厚度
D.
混凝土灌注完成后方可提升导管
E.
每根桩灌注混凝土最终高程应略低于设计桩顶标高
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【单选题】卤代烷在NaOH含水乙醇中反应,下面属于SN1历程的应是: 1碱浓度增加,反应速率无明显变化 2碱浓度增加,反应速率明显增加 3增加溶剂含水量,反应速率加快4反应产物构型转化
A.
①②
B.
①④
C.
②③
D.
①③
【单选题】-Excuse me. Do you know ? - Last Sunday.
A.
where he would like to visit
B.
when he was back home
C.
how he came here
D.
why did he come to the zoo
【简答题】How would you like an easy way to earn $2,500? All you have to do is to sit around and wait for your meals. There’s a catch, however. You have to stay in a chicken cage with a stranger for a whole wee...
【判断题】He would like to be informed from time to time how she was getting along.()
A.
正确
B.
错误
【单选题】古希腊哲学家克拉底鲁认为万物只是一种不可名状的“旋风”，瞬息万变。他拒绝给事物一名称。主张对万物“什么都不要说”。他的错误在于（）
A.
否定事物客观性
B.
夸大人的主观能动性
C.
否认事物的相对静止
D.
割裂物质和运动的关系
【单选题】古希腊哲学家克拉底鲁认为，万物只是一种不可名状的“旋风”，瞬息万变。他拒绝给事物以名称，主张对事物“什么也不能说”。其错误在于( )。
A.
否定了事物的客观性
B.
夸大了主观能动性
C.
否认了事物的相对静止
D.
割裂了事物和运动的关系
【简答题】How would you like an easy way to earn 2,500 dollars? All you have to do is to sit around and wait for your meals．There’s catch, however．You have to stay in a chicken cage with a stranger for a whole ...
【简答题】阅读理解。 How would you like an easy way to earn $2,500? All you have to do is to sit around and wait for your meals. There's a catch , however. You have to stay in a chicken cage with a stranger for a wh...
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