per

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per

1.与PMT函数相比，PPMT函数多了一个要素——per，per表示（）2.A wholesale food retailer is offered $15.60 per two-layer carton for 5000 cartons of peaches. The wholesaler can buy peaches fro3.Suppose the dollar per pound exchange rate is $2 per pound while the dollar per Swiss franc exchange rate is 50 cents per franc.4.The yield components of rape are composed of four factors: number of plants per unit area， number of pods per plant， number of s5.The yield per unit area of wheat is composed of spikes per unit area，（）and kernel weight.6.A rocket traveling away from Earth （） a speed greater than 11.186 kilometers per second（6.95 miles per second）or 40,270 kilomete7.60 dollars per night per room, plus 15%（）.