For Linux, UNIX, and Windows DBAs, the roadmap shows three ascending levels of certification.

对于Linux、UNIX和Windows DBA，路线图显示了三个递增的DBA认证级别。

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Company Strict implementation of ISO9001 international quality system certification standards to guide all levels of management throughout the company.

公司严格推行ISO 9001国际质量体系认证的标准来指导整公司的各层管理。

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In some states, stepped tax credits are offered to commercial buildings for different levels of LEED certification.

在美国的某些州，针对获得不同级别LEED证书的商业建筑，会给予不同程度的税收优惠。

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The Oil Pollution Act of 1990, which was precipitated by the tragedy in Alaska, has put forward a response plan with levels of certification and qualification for those who respond to oil spills.

WHITEHOUSE: Press Briefing on Oil Spill in Gulf of Mexico

The CCIE is the highest of Cisco's three training levels, and Cisco offers six areas of certification, including routing and switching, security and storage networking.

FORBES: Magazine Article