增加投资、增加消费和增加政府支出对国民收入的影响都是相同的。( )
参考答案:错
基坑降水的目的之一为加固基坑坑底的土体,提高坑底土体强度,从而减少坑底隆起和围护结构的(),防止坑外地表过量沉降。
A.沉降
B.位移
C.变形量
完成下列对话:______。
A:Good morning, this is Miss Li, secretary to Mr.Smith of ABC Company. ______B:This is Zhang Hai from Beijing. ______A:I am sorry, ______. May I take a messageA.Can I help you;May I speak to Mr.Smith;please hold onB.May I speak to Mr.Smith;Can I help you;Mr.Smith is unavailableC.Can I help you;May I speak to Mr.Smith;Mr.Smith is unavailableD.May I speak to Mr.Smith;Can I help you;please hold on