【单选题】【消耗次数：1】
泥浆护壁成孔灌注桩成孔机械可采用
①
导杆抓斗
②
高压水泵
③
冲击钻
④
导板抓斗
参考答案：
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相关题目
【单选题】
关于泥浆护壁成孔灌注桩，以下表述错误的是（ ）
①
所注入的泥浆起到护壁、携渣、润滑钻头和减少阻力等作用
②
钻机钻孔时，应在孔中注入泥浆，并保持泥浆液面高于地下水面1.0M以上
③
钻孔深度达到设计标高后，先注清水换浆，然后清孔，必须用水泵抽干孔中的水 D. 钻孔、清孔完成后，应尽快吊放钢筋笼并灌注砼
【单选题】
以下关于振动灌注桩的说法，正确的是（）。（第三章知识点11泥浆护壁成孔灌注桩）
①
适用范围广，除软土和新填土，其他各种土层均可适用
②
单打法、反插法和复打法三种方法产生的桩承载能力依次上升
③
振动灌注桩的承载能力比同样条件的钻孔灌注桩高
④
其施工方法是用落锤将桩管打入土中成孔，然后放入钢筋骨架，灌注混凝土，拔出桩管成桩。
【单选题】
砼灌注桩按成孔方法可分为以下四类：①钻孔灌注桩；②沉管灌注桩；③人工挖孔灌注桩；④爆扩灌注桩。其中，属于挤土成孔的是（）。
①
①和②
②
③和④
③
①和③
④
②和④
随机题目
【单选题】
The new cut in interest rate ____ promote domestic investment.
①
means to
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directs toward
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is meant to
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leads to
【单选题】
—__________fine day it is today!—Yes, the sunshine is__________beautiful that Id like to go swimming in the sea.
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How, such
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What a, very
③
How, so
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What a, so
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By cutting down trees we ____ the natural home of birds and animals.
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harm
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hurt
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injure
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damage
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Nowadays, many people suffer from _________ depression under the pressure of working.
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acute
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sharp
③
quick
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cute
【单选题】
Something must have happened on their way. Or they_____
by now.
①
should have arrived
②
should arrive
③
would have arrived
④
would arrive
【单选题】
The treasury issued an order stating that ____ land purchased from the government had to be paid for in gold and silver.
①
henceforth
②
moreover
③
whereby
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however
【单选题】
If a substance is dissolved in water or heated, it
may ____ a gas.
①
give into
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give over
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give off
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give away
【单选题】
A（n）____ person is one who has much knowledge and
the ability to use it well.
①
smart
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intelligent
③
clever
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wise
【单选题】
Twenty-year-olds should not _____ to drive in China.
①
allow
②
be allow
③
be allowed
④
allowed