单项选择题
In the contract, usually there is a （）clause to protect the buyer against loss from delay of the shipment of the goods.
A．payment B．shipment C．penalty D．quality
单项选择题 The customs duties act （）an essential leverage on regulating import and export behavior.
单项选择题 The Chinese word “运单” is translated as（）
单项选择题 Swedish Krona is the currency of（）
