关于工程建设中采用国际标准或者国外标准，下列说法正确的是（） A.建设单位应当向国务

Construction is expanding all over China, no doubt many materials will be needed at a very big amount in future.

A．China, no doubt many materials will be needed for a very big amount

B．China, no doubt many materials will be needed in a very big amount

C．China; no doubt many materials will be needed in large amounts

D．China; no doubt many materials will be needed for large amounts

( )是指在企业与其他单位和个人之间发生的各种经济利益的交换，如购买材料、产品销售等。

A．经济事项

B．经济环境

C．经济业务

D．会计对象

为什么盐酸利多卡因不用亚硝酸钠滴定法测定而用非水滴定法测定？

ADI上显示的GS（地速）来自：（）.

A、动静压系统

B、ADC

C、FMC/IRS

简述观光农业客源市场结构。