题目内容
食品中的灰分主要是由有机物和无机物形成的
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550℃灼烧法适合所有食品中灰分的测定
样品灼烧后的残留物等于样品中原有的无机物含量
农产品中的矿物质组成就是灰分，所以可以用灰分来表示矿物质的含量。
The Batley Print Shop rents a photocopying machine from a supplier for which it makes a quarterly payment as follows.(a) Three month’s rental in advance(b) A further charge of 2 cents per copy made during the quarter just endedThe rental agreement began on 1 August 20X4 and the first 6 quarterly bills were as follows.The bills are paid promptly, as soon as they are received.(a) Calculate the charge for photocopying expenses for the year to 31 August 20X4 and the amount of prepayments and/or accrued charges as at that date(b) Calculate the charge for photocopying expenses for the following year to 31 August 20X5, and the amount of prepayments and/or accrued charges as at that date.
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