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Exports are either raw materials or manufactured goods. Raw materials are products of the land, such as cotton, timber or rubber. Some raw materials, such as iron ore, come from mines. These raw materials are often exported by the countries that produce them to other countries where they are made into manufactured goods. Some countries produce food for export, for example, meat, sugar, or cereals such as wheat and maize. These countries are agricultural countries. An agricultural country needs fertile land and a good climate. A cold, dry climate is not suitable for agriculture. A country which produces manufactured goods is known as an industrialized country. An industrialized country cannot always produce enough food for its own needs. In this case, it does not export foodstuffs. Instead it has to import them. It relies on exports of manufactured products and pays for imports with the money it earns from the exported goods. Raw materials are often exported by the countries that produce them to other countries where().
Your physical environment is configured as shown in the network diagram. The firewall in the diagram is a generic hardware based firewall product. You are planning to deploy a Windows Server 2008 R2 Hyper-V server to virtualize your current physical environment. You have the following requirements: - The Web server VM in the perimeter network (also known as DMZ) must be able to communicate with only the SQL Server computer VM through the firewall. - The SQL Server computer VM must be able to communicate with the Web server VM. - The client computer VM must be able to communicate with the Web server VM. - Two dedicated iSCSI networks must available to the SQL Server computer VM. - A dedicated management interface must be available for the Hyper-V server. You need to choose the appropriate virtual network configuration. Which networking solution should you choose?()
用邻菲啰啉分光光度法测定样品中铁的含量时,用1cm样品池侧得样品吸光度值为0.080,为使吸光度值达到约0.160,需要()。
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连续函数的介值定理认为一个连续函数在一个点处函数值小于零,在另一个点处大于零,则在这两个点上必定有一个函数值等于()。
设是连续函数,求a、b之值。
连续函数一定可积。
设,f(x)为连续函数,且f(0)=0,f′(x)>0,则y=F(x)在(0,+∞)内是( )。
设,f(x)为连续函数,且f(0)=0,f′(x)>0,则y=F(x)在(0,+∞)内是( )。
若连续函数f(x)满足,则f(x)=____。
设f(x)为连续函数,且f(0)=0,f′(x)>0,则y=F(x)在(0,+∞)内是( )。
为连续函数,则( ).
若f(x)是[a,b]上的连续函数且则必∃ξ∈(a,b),使φ′(ξ)=____。
设f(x)为连续函数,且f(0)=0,f′(x)>0,则y=F(x)在(0,+∞)内是( )。