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1. |
The hydrostatic pressure‚Äö√Ñ√∂‚à ö√ë‚à ö¬•s inability to produce failure under normal pressure was first demonstrated by___________$ |
A. | Cross land |
B. | W. Pager |
C. | D.C. Drucker |
D. | Mohr |
Answer» B. W. Pager | |