构建虚拟企业必须具备一定的内外部条件和运行网络平台。
However, building virtual enterprises must have certain conditions of exterior and interior and a network for operation.
一般出口货物办理退税必须具备一定的条件，对不同企业有不同的退税办法。
Practically certain conditions must be provided with for average export goods before any duty drawback can be obtained, and different methods are applicable for different enterprises.
报考公务员必须具备一定的资格条件，即国家和主考机关规定的成为某职位上的公务员不可缺少的起码条件。
Apply for civil servants must possess certain qualifications, that is, organs of state and examiners under the civil service into a position on the minimum conditions are indispensable.
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