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| 1. |
Which windmill blades are made by an array of wooden slats?1. In which of the following, does machine rotor drives through a step up gear box? |
| A. | Horizontal axis with two aerodynamic blades |
| B. | Horizontal axis propeller type wind mill |
| C. | Horizontal axis multi bladed type wind mill |
| D. | Horizontal axis wind mill Dutch type |
| Answer» E. | |