服务员在（）时应对住客房内的小酒吧逐一查核，如有饮用，及时补充并开好账单。
A. 上午换茶具
B. 清理房间
C. 晚间做夜床
D. 访客走后
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汽车生产厂家为防止新车在储运过程中漆膜受损，会在车身上喷一层蜡，叫做（）。
When scaling Coherence from one to two cache servers， it will not show the same scalability as two to four. Why？（）
A. Coherence uses a more efficient TCMP algorithm going from two to four cache servers
B. When going from one to two cache servers， object backups are copied across servers so work is doubled，but going from two to four is a fixed amount of work
C. Near cache is enabled with a larger quorum thus performance is improved
D. all of the above
大宗商品的供给弹性较低，其价格是实体经济价格水平的典型代表，而实体经济物价走势与证券市场为代表的虚拟经济吸纳游资的能力呈（）
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