第13题: [单项选择]When had the woman purchased the dress A. Shortly after Christmas. B. In the spring. C. During the Christmas season. D. During the sale. 参考答案:C 答案解析:[听力原文] M: If you had waited until after the Christmas holidays, you could have bought that dress
第22题: [多项选择]针对桩缩孔或塌孔、挤密效果差的情况,所采取的措施为( )。 A. 含水量大时,必须采用套管成孔,并回填可振动密实的砂石或混凝土 B. 含水量小时,应预先浸湿加固范围的土层,使之达到或接近最佳含水量 C. 遵守成孔挤密顺序,先外圈、后里圈并间隔进行 D. 成孔后应及时回填夯实,为避免夯打造成缩颈堵塞,应打一孔、填一孔,或隔几桩位跳打夯实 E. 挤密桩的有效挤实范围,一般以2.5~3倍桩为宜 参考答案:A,B,C,D