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现金和银行存款之间的相互划转业务一般只填写______。
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总账、日记账和多数明细账应______更换一次。
Petroleum is a very important mineral. It gives us heat and light. It also gives us power for our cars, planes, and ships. It gives us power for machines of all kinds.How was petroleum created Scientists believe petroleum was formed from the remains of plants and animals. These plants and animals lived and died millions of years ago. Remains are what is left after a plant or animal has died.What exactly is petroleum Petroleum is a mineral that is a mixture of hydrocarbons. It is an oily liquid which may be brown, green, or black in colour. The word "petroleum" comes form Latin and Greek. It means "rock oil".Crude oil is petroleum that comes directly from deep in the ground. It is then taken to a refinery. A refinery is a kind of factory with equipment in it to refine oil. At a refinery the crude oil is purified and separated into its various parts. From the refined petroleum we obtain important products, such as gasoline, kerosene, fertilisers, detergents, plastics, drugs, and perfumes. These are just a few of the thousands of useful products we get from this valuable mineral-petroleum. From the refined oil we obtain important products, such as gasoline, () , detergents,(), () , and perfumes.
______为编制会计报表提供直接的依据。
下列事件过程的功能是：建立一个名为Datal的随机文件，存放角度值及这些角度的正弦函数值和余弦函数值，角度为1，2，3，…，90。请在空白处填入适当的内容，将程序补充完整。 Private Type Ang K As Integer Sinx As Single Cosx As Single End Type Dim Ksc As Ang Private Sub Form_Click() Dim Y As Single Open (14) Y=3.14159/180 For i=1 TO 90 Ksc.K=i Ksc.Sinx=Sin(i*Y) Ksc.Cosx=Cos(i*Y) (15) Next i Close#2 End Sub
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