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根据《建筑基坑支护技术规程》(DB11/489-2016)第5.8.5条，型钢水泥土搅拌墙施工应符合下列要求（）A.
施工前应通过成桩试验确定水泥浆液、水灰比等工艺参数及成桩工艺
B.
水泥土搅拌桩施工时桩机就位应对中，平面允许偏差应为±20mm，立柱导向架的垂直度不应大于1/250
C.
因故搁置超过2h以上的拌制浆液，需要按规范严格处理后继续使用
D.
桩与桩的搭接时间不宜大于24h，若因故超时，搭接施工中必须放慢搅拌速度保证搭接质量
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【单选题】动作脚本butterfly._x = butterfly._x-10;可简写成。
A.
butterfly_.x +=10;
B.
butterfly._x =-10;
C.
butterfly_.x -=10;
D.
butterfly._x -=10;
【简答题】It is ______ to compare the number of species of ant and butterfly.
【简答题】iMoD was developed from studies of butterfly wings.
【单选题】Which of the following statements concerning butterfly valves is correct?
A.
Special tools are required for lapping or grinding
B.
It is impossible to throttle flow with a butterfly valve
C.
To close the valve, it is only necessary to turn the handle a quarter of a turn
D.
The butterfly valve should never be used in a freshwater system
【简答题】A Play: Four Butterflies(蝴蝶) Characters: Red Butterfly (RB), Green Butterfly (GB), Green Tree (GT), Rose (R), Grandpa Sun (GS) Look! There are four butterflies in the garden. One is red, one is yellow...
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