粗锡的火法精炼包含哪些主要过程？
you configure a new file server that runs windows server 2008. Users access shared files on the file server. Users report that they are unable to access the shared files.The TCP/IP properties for the file server are configured as shown in the following exhibit.You need to ensure that users are able to access the shared files. What should you do?（） ["Configure a static IP address.","Configure the default gateway.","Configure the DNS server address.","Add the domain to the DNS suffix on the network interface."]
在自然土壤中，可能出现的土壤剖面形态持征是（）。 ["新生体","侵入体","结构体","石灰反应","铁锰结核"]
音节
经营企业应保存完整的无菌器械购销记录和有效证件，无菌器械购销记录及有效证件必须保存到产品有效期满后（）年。
某公司全部资本为1500万元，债务资本率40%，债务利率为12%，所得税率为33%，营业利润为160万元。计算财务杠杆系数并作简要说明。
