【多选题】【消耗次数：1】
下列情况下可产生负摩阻力的是：（）。
①
桩附近大量堆载，引起地面沉降；
②
地下水位下降，引起土层产生自重固结；
③
桩穿越欠固结土层进入硬持力层；
④
挤土效应引起已就位的桩上浮
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相关题目
【多选题】
验算可能产生负摩阻力桩的单桩承载能力时，下列说法正确定的是（）。
①
桩侧摩阻力取整个桩长范围内的侧阻力之和；
②
负摩阻力应作为外荷载加以考虑；
③
桩侧摩阻力只计中性点以下桩段的侧摩阻力之和；
④
取中性点处作为验算截面；
【单选题】
桩产生负摩阻力时，中性点的位置具有以下特性？
①
桩端持力层越硬，截面刚度越大，中性点位置越低
②
桩端持力层越硬，截面刚度越大，中性点位置越高
③
桩端持力层越硬，截面刚度越小，中性点位置越低
④
桩端持力层越软，截面刚度越大，中性点位置越低
【单选题】
桩产生负摩阻力时，中性点的位置具有的以下特性：（）。
①
桩端持力层越硬，截面刚度越大，中性点位置越低；
②
桩端持力层越硬，截面刚度越大，中性点位置越高；
③
桩端持力层越硬，截面刚度越小，中性点位置越低；
④
桩端持力层越软，截面刚度越大，中性点位置越低
【单选题】
桩产生负摩阻力时，中性点的位置具有的以下特性？
①
桩端持力层越硬，截面刚度越大，中性点位置越低
②
桩端持力层越硬，截面刚度越大，中性点位置越高
③
桩端持力层越硬，截面刚度越小，中性点位置越低
④
桩端持力层越软，截面刚度越大，中性点位置越低
随机题目
【单选题】
At the end of The Fall of the House of Usher, the lady Madeline and her brother ______.
①
recover from their illness
②
fall dead together
③
flee from the decaying house
④
start a new life
【单选题】
For Hemingway’s heroes, man’s greatest achievement is _________.
①
to show grace under pressure
②
to keep bravery before danger
③
to share encouragement under pressure
④
to be optimistic under pressure
【单选题】
To Hemingway, man’s greatest achievement is to show ______.
①
bravery before danger
②
grace under pressure
③
encouragement under pressure
④
optimism under pressure
【单选题】
“The apparition of these faces in the crowd; Petals on a wet, black bough”. This is the shortest poem written by?______.
①
T. S. Eliot
②
Robert Frost
③
Ezra Pound
④
Wallace Stevens
【单选题】
Which of the following is depicted as the mythical county in William Faulkners novels?
①
Cambridge
②
Oxford
③
Mississippi
④
Yoknapatawpha
【单选题】
“The Love Song of J. Alfred Prufrock” is T. S. Eliots most striking early achievement. The poem is a sort of ______monologue.
①
private
②
personal
③
dramatic
④
poetic
【单选题】
______ is Edwin Arlington Robinson’s best character sketch telling the story of the well-educated and rich hero who is admired by the town people but suddenly shot himself on one night.
①
“MiniverCheevy”
②
“Richard Cory”
③
“The House on the Hill”
④
None of the above
【判断题】
Mark Twain, one of the greatest 19th century American writers, is well known for his international theme.
①
正确
②
错误
【判断题】
As a realist, Mark Twain concerned particularly about the local character of a region, which came about as “Local Colorism”.
①
正确
②
错误
【判断题】
The first American writer of local color to achieve wide popularity was Bret Harte.
①
正确
②
错误