以下签证类别必须要有 经济担保 （ Assurance of Support ），即强制性 经济担保 （Mandatory Assurance of Support ）：
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General Dynamics will also perform quality assurance and support the development of policy and procedures such as software certification and safety, the announcement said.
声明说，通用动力公司也将执行质量保证，并支持软件的认证和安全的政策和程序方面的问题。
IBM Rational offers a full complement of quality assurance support for Linux-based development.
IBM Rational提供了一个完整的对基于Linux开发的质量保证支持的补充。
But while its Assurance Program received heavy support, it wasn't the sole route of advance.
衰退不是使顾客的热情减少了，而只是使顾客的热情被掩盖住了。 但当现代汽车的担保计划受到如此多的追捧时，担保计划还不是唯一的前进之路。
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