在西餐服务中，为客人服务酒时，应女士及年长者优先，最后才为点酒主人倒酒。（ ）

son given for the merger’s lck of success isdifficulties in integrting the two brnds’ supply chins. B．incresed competition from other supermrket businesses. C．customers’ unwillingness toccept chnges in the stores.A．difficulties in integrating the two brands’ supply chains．B．increased competition from other supermarket businesses．C．customers’ unwillingness to accept changes in the stores．

A、刚体
B、质点
C、质点系
D、可变形固体