桩基础施工中，振动沉桩法( )。 A．用于卵石夹砂及紧密黏土

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问题多项选择题

桩基础施工中，振动沉桩法( )。

A．用于卵石夹砂及紧密黏土土层

B．用于打钢板桩

C．设备构造简单，使用方便

D．施工操作安全

E．施工速度较慢

答案

参考答案：B,C,E

填空题

缺勤率的算法是______．

单项选择题

汉译英：“承兑交单；付款交单；货到即付”，正确的翻译为( )。

A．document against acceptance；document against payment；payment against arrival

B．document against payment；document against acceptance；payment against arrival

C．document against acceptance；payment against arrival；document against payment

D．payment against arrival；document against payment；document against acceptance