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【简答题】
在标准状况下，6.2g磷在氧气中充分燃烧，需要氧气多少升？同时能生成产物的质量为多少克？（已知标准状况下氧气的密度为1.43g/l）
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【简答题】为什么说碱性耐火材料中的酸性氧化物及酸性耐火材料中的碱性氧化物均被视为有害杂质？
【判断题】When the sales order system is on-line, salespersons can immediately verify the inventory levels.
A.
正确
B.
错误
【简答题】Business Orders In business, an order is a spoken or written intention of a deal ( 交易 ) for specific products or services. From a buyer’s point of view it expresses the intention to buy and is called ...
【简答题】III.Translate the following short paragraphs into Chinese. 1.When the purchase order of the buyer and the sales order of the seller agree, the orders become a contract between the buyer and the seller...
【单选题】It is known that the sales volume during the last six order period is 10,16,14,20,16,14t, C0 = 75 yuan, the average material storage fee during lead time C1 = 10 yuan / t, the safety factor α = 1. Usi...
A.
the order strategy of the goods is: check the inventory at any time, when it drops to 18t, place an order and the order quantity are 15t.
B.
the order strategy of the goods is: check the inventory at any time, when it drops to 18 boxes, place an order and the order quantity is 18 boxes.
C.
the order strategy of the goods is: check the inventory at any time, when it drops to 9 boxes, place an order and the order quantity are 7 boxes.
D.
the order strategy of the goods is: check the inventory at any time, when it drops to 26 boxes, place an order and the order quantity are 36 boxes.
【单选题】A seller intends to increase the price of a certain commodity in order to obtain more sales revenue, but as a result, the sales revenue decreases. When the demand price of the commodity is flexible( ...
A.
Inelastic
B.
elastic
C.
unit elastic
D.
perfect elastic
【简答题】测定和了解耐火材料的高温使用性质，对提高产品（）和合理选用耐火材料都有直接意义。
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