单选题 Trading companies need to ensure their ability to handle orders efficiently, making an online system an essential sales channel.
【正确答案】 B
【答案解析】本句中,ensure their ability to handle orders efficiently是“确保高效处理订单的能力”的意思,an essential sales channel意为“重要销售渠道”。B项译出了句子的全部意思。A项漏译efficiently,后半部分与原文意义有出入。C项的译文与原文完全不符。