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17 years ago, Krishna Kumar started offering free PMP prep online. Today, it’s a leading digital upskilling platform that helps millions upskill in AI, cybersecurity, data science, and more.

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环境卫生学实验


Master practical environmental health monitoring techniques through hands-on sampling, testing, and analysis of air and water quality. Develop skills in pollution assessment, emergency response, and preventive measures for public health protection.
- XuetangX
- Self-Paced
- Free Online Course
轮机英语听力与会话


Marine Engineering English is Also A Workmanship. To build a prosperous, modern, and powerful transportation country, I, you, and they are in the group and on the way.
- XuetangX
- Self-Paced
- Free Online Course
建设项目管理


Dive into comprehensive construction project management, covering scheduling, quality control, cost management, safety protocols, and modern BIM implementation for effective project execution.
- XuetangX
- Self-Paced
- Free Online Course
电路理论


介绍电路基本定律和分析方法，包括直流电路、正弦稳态电路和动态电路分析三大部分。本课程2009年评为辽宁省精品课，使用的2本主编教材是“十五”国家级规划教材和辽宁省“十二五”规划教材。
- XuetangX
- Self-Paced
- Free Online Course
信号与线性系统


Master signal analysis and linear systems through time, frequency, and transform domains with practical applications in electronic engineering and communications.
- XuetangX
- Self-Paced
- Free Online Course
架空输电线路设计


Dive into overhead power transmission line design fundamentals, covering mechanical calculations, meteorological factors, and digital design techniques for modern power infrastructure development.
- XuetangX
- Self-Paced
- Free Online Course
工程地质分析原理


Discover the principles of engineering geology analysis, focusing on interactions between human engineering activities and geological environments through practical case studies and quantitative evaluations.
- XuetangX
- Self-Paced
- Free Online Course
轮机概论


Dive into ship engineering fundamentals, covering propulsion systems, power generation, deck machinery, and maritime regulations while gaining hands-on experience aboard training vessels.
- XuetangX
- Self-Paced
- Free Online Course
化学工艺学


Master the fundamentals of chemical process engineering, from ammonia synthesis to petroleum processing. Learn industrial production methods, equipment operations, and essential theoretical knowledge for modern chemical manufacturing.
- XuetangX
- Self-Paced
- Free Online Course
航海概论


航海概论课程一门专业拓展课，该课程具有一定的理论性和实践性，主要针对非航海技术专业学生介绍航海的基本原理和基础知识，以便对航海相关相关知识有一定了解。
- XuetangX
- Self-Paced
- Free Online Course
船


本课程是在国家“人类命运共同体”、“一带一路”背景下，结合学校特色应运而生的全新课程，以船为载体旨在传播海洋文明和海事文化。
- XuetangX
- Self-Paced
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轮机自动化


《轮机自动化》主要内容包括自动化基础和轮机自动控制系统两大部分，不仅是我国航海院校轮机工程专业的必修课和主干专业课，还是我国海事局高级船员资格考试的必考科目。
- XuetangX
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- Free Online Course
建筑工程施工


本课程由三位工程经验丰富的施工老师匠心打造，授课内容能够反映当今建筑工程施工领域的最新成果和进展，是助您提升施工执业能力的利器与法宝，是伴您走向事业巅峰的良师和益友。
- XuetangX
- Self-Paced
- Free Online Course
城乡规划新技术GIS应用


Master GIS applications in urban-rural planning through ArcGIS tools, spatial analysis, data visualization, and advanced techniques for solving complex urban development challenges.
- XuetangX
- Self-Paced
- Free Online Course
高等数学精讲（下）

《高等数学精讲》是高等数学的独孤九剑，直击高等数学的重点和难点，能解决期末考试、考研及数学竞赛的所有数学问题。
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