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【简答题】
B Read a passage and choose the best answer. P57 Cash bars are essentially very similar to regular outlet beverage sales, where each individual customer has to pay for his or her own drinks. In most cases, a cashier is provided for control of cash bars, using a ticket system. There are a limited number of different prices for the various categories of drinks served. For each price there is a different colored ticket. Either the guest or the server will purchase the appropriate ticket from the cashier and present it to the barman in order to obtain the drink required. With the sale of cash bars, it is especially important to have an accurate record of the quantities consumed, so that the potential sales valve of consumed, so that potential sales valve of consumption can be compared with actual cash receipts. 3. What is important with the sale of cash bars? A. The servers buy the tickets from the cashier. B. Each individual customer has to pay for his or her own drink. C. The exact number of customers can be obtained. D. An accurate record of the quantities consumed can be obtained.
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皮皮学刷刷变学霸
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【单选题】严重酸中毒时机体可出现:
A.
心率增加，心收缩力增强
B.
血管收缩，血压呈上升趋势
C.
血钾降低使体钾总量减少
D.
外周血管扩张及心功能受损
E.
其余选项都不对
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A.
正确
B.
错误
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【简答题】____是指用于公共场所、交通、建筑、环境中的 指示系统 符号。
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