[单选] A trade custom has been proved to the effect that in trade between Sarawak and Singapore mate’s receipts（）universally adopted as documents of title as in same way as bills of lading.

零件在弯曲前，坯料的准备工作应注意些什么？ 应收账款的信用成本是指企业持有一定应收账款所付出的代价，包括（） 机会成本。 管理成本。 短缺成本。 转换成本。 简述国外馈赠礼仪基本常识。 如果企业制定的信用标准较严，只对信誉好坏账损失率低的客户给予赊销，则会（） 扩大销售量。 减少销售量。 增加坏账成本。 减少坏账成。 在介入小水电企业贷款业务时要树立（）和社会责任感。 环保意识。 效益意识。 合规意识。 风险意识。 A trade custom has been proved to the effect that in trade between Sarawak and Singapore mate’s receipts（）universally adopted as documents of title as in same way as bills of lading.