试样的制备通常应经过破碎、过筛、混匀、缩分四个基本步骤。( )
参考答案：对
国际储备的多寡是衡量一国对外资信的重要标志之一。( )
The form of receipt for any Customs duties collected for the delayed payment shall be prescribed by ______.
A. The Customs General Administration B. The Customs HousesC. The Tariff commission D. The Ministry of Finance
