【单选题】【消耗次数:1】
《公路桥涵地基基础设计规范》(JTGD63-2007)规定:当存在软弱下卧层时,要求桩端以下硬持力层厚度不宜小于几倍桩径(d)?
2.0d;
3.0d;
4.0d;
5.0d;
参考答案:
复制
纠错
随机题目
【单选题】 在19世纪初叶
①  in the early nineteenth century
②  at the early nineteenth century
【单选题】 It’s getting colder. You’d better _____ your coat.
①  put on
②  to put on
③  putting on
④  puts on
【单选题】 提出建议
①  put forward a proposal
②  put forward a suggestion
【单选题】 Hurry up, _____ you’ll be late.
①  or
②  if
③  so
④  as
【单选题】 I know ________ everything is going to be right.
①  what
②  that
③  which
④  how
【单选题】 One can’t learn a language well, ________ he works hard.
①  if
②  and
③  unless
④  because
【单选题】 I _______ asked ________ the question.
①  myself, he
②  me, him
③  myself, him
④  me, himself
【单选题】 Let’s begin our class _________ you are all here.
①  if
②  when
③  since
④  before
【单选题】 Tom can’t come _____ he is ill.
①  because
②  if
③  so
④  whether
【单选题】 We have cleaned our yard, _____ they haven’t cleaned theirs.
①  but
②  and
③  so
④  because