The steady- state flow must satisfy ___________

• A. Kirchhoff‚Äö√Ñ√∂‚àö√ë‚àö¬•s law
• B. Newtons law
• C. Rutherford‚Äö√Ñ√∂‚àö√ë‚àö¬•s experiment
• D. Kepler‚Äö√Ñ√∂‚àö√ë‚àö¬•s law