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。
2
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。
3
In some states, stepped tax credits are offered to commercial buildings for different levels of LEED certification.