交分道岔 slip switch

SLIP：

PPP也是一个实现点对点连接通信的方法，可以替代SLIP。下列关于SLIP和PPP的叙述中不正确的是（）。

A:SLIP是串行线路IP协议 B:采用PPP方式入网的用户是通过电话拨号上网的，SLIP不是 C:PPP在点到点设备上支持多协议数据的传输 D:SLIP和PPP在点到点连接时，分配一个IP地址，断开时该IP地址可以给另一拨号用户

PPP是另一个实现点对点连接通信的方法，可以替代SLIP。有关SLIP和PP的陈述不正确的是（）。

A:SLIP是点到点连接的 B:PPP是电话拨号上网的，SLIP不是 C:PPP在点到点设备上支持多协议数据的传输 D:SLIP和PPP在点到点连接时，分配一个IP地址，断开时该IP地址可以给另一拨号用户

SLIP和PPP都是通过普通电话线连接的协议，比较SLIP和PPP两个协议，则（）。

A:SLIP比PPP要快 B:SLIP比PPP要新 C:PPP比SLIP要快 D:PPP与SLIP一样

{{B}}第二篇{{/B}}

What does the customer collect before he or she leaves?

A:The printed slip. B:The bag. C:The metal basket. D:The cash.

Most supermarkets need a very large floor area, sometimes at least ten times as big as that of an ordinary shop. There are usually two doors, one as an entrance and the other as an exit. The rest of the side facing the street is largely of plate glass, with goods or advertising material displayed. The other three wails are normally decorated in light colours, giving an impression of cleanliness (清洁)and brightness. Most supermarkets are on one floor only. Goods being stored in rooms at the back or upstairs.
At right-angles to the window stretch long structures about six feet high with a number of shelves on each side. Similar shelf units or frozen food containers extend round the walls. Broad aisles(通道)between the shelf units and ample(足够的)space between them and the window and also the far wall allow room for the circulation of many people. Individual commodities(商品), in tins, bags, boxes or other containers, are stacked (堆放) in groups on the shelves, and each group is labelled with a price ticket. Metal baskets near the entrance are taken by the shoppers who collect in them the goods they select from the shelves.
Between the shelf units and the window in one half of the shops are a number of small counters about three feet high. Beside each sits a cashier (现金出纳员), who operates a machine for reckoning, detailing the cost of each customer’s purchases. The customer places the basket at one end of the counter so that it can be emptied by the cashier who records the price of the commodities one by one, before putting each on a moving section of the counter top. The goods are collected and packed into the customer’s bag by another assistant at the end of the counter. The cashier finally hands a printed slip recording all prices to the customer, who pays the total, collects the bag and leaves.
What does the customer collect before he or she leaves

A:The printed slip. B:The bag. C:The metal basket. D:The cas

{{B}}第二篇{{/B}}

What does the customer collect before he or she leaves?

A:The printed slip. B:The bag. C:The metal basket. D:The cash.

Supermarket
Most supermarkets need a very large floor area, sometimes at least ten times as big as that of an ordinary shop. There are usually two doors, one as an entrance and the other as an exit. The rest of the side facing the street is largely of plate grass, with goods or advertising materials displayed. The other three walls are normally decorated in light colors, giving an impression of cleanliness (清洁) and brightness. Most supermarkets are on one floor only, goods being stored in rooms at the hack or upstairs.
At right-angles to the window stretch long structures about six feet high with a number of shelves on each side. Similar shelf units or frozen food containers extend round the walls. Broad aisles (通道) between the shelf units and ample (足够的) space between them and the window and also the far wall allow room for the circulation of many people. Individual commodities (商品), in tins, bags, boxes or other containers, are stacked (堆放) in groups on the shelves, and each group is labeled with a price ticket. Metal baskets near the entrance are taken by the shoppers who collect in them the goods they select from the shelves.
Between the shelf units and the window in one half of the shops are a number of small counters about three feet high. Beside each sits a cashier (现金出纳员), who operates a machine for totaling the cost of each customers’ purchases. The customer places the basket at one end of the counter so that ii can be emptied by the cashier who records the price of the commodities one by one, before putting each on a moving section of the counter top. The goods are collected and packed into the customer’s hag by another assistant at the end of the counter. The cashier finally hands a printed slip recording all prices to the customer, who pays the total, collects the bag and leaves.
What does the customer collect before he or she leaves

A:The printed slip. B:The bag. C:The metal basket. D:The cas

{{B}}第二篇{{/B}}

What does the customer collect before he or she leaves?

A:The printed slip. B:The bag. C:The metal basket. D:The cash.