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1. |
The helix angle for single helical gears ranges from |
A. | 10° to 15° |
B. | 15° to 20° |
C. | 20° to 35° |
D. | 35° to 50° |
Answer» D. 35¬¨¬®‚Äö√†√ª to 50¬¨¬®‚Äö√†√ª | |