单项选择题 Company B sent us a buying offer, subject to our reply there before July 22. On July 24, we telexed our acceptance to the offer but received no reply. As the market price kept rising, we unexpectedly

未知题型 使用振动排痰机时，操作者一手轻握叩击头手柄，另一手引导叩击头，将排痰仪叩击头置于患者肺底部，由慢到快、由外向内、由下往上进行移动，每个部位叩击1-2分钟（）

单项选择题 决定服装轮廓造型的关键是（ ）、（ ）和（）松量的确定。