_____is a letter sent to a supplier with whom you have not previously donebusiness.
·First enquiry
·Aenquiry
·A quotation
·A first quotation
出自:佳木斯大学语言治疗学

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块