working knowledge sentence in Hindi

Examples

1. A working knowledge of the lessons of history is a necessity for survival.
2. One of the Americans has a good working knowledge of the Italian team.
3. Many of them presuppose a working knowledge of genealogy.
4. Harvard Business School featured the study on its " Working Knowledge"
5. Land Offices should be frank about their working knowledge.
6. He graduated with a working knowledge of English, French, and German.
7. He speaks German and English fluently, has a working knowledge of French.
8. A working knowledge of the materials involved is required.
9. To see that he is wrong requires a working knowledge of special relativity.
10. Intimate working knowledge of Wikipedia rules is a must.