The angle of taper on draft tube is A. greater than 15° B. greater than 8° C. greater than 5° D. less than 8° E. less than 3°.___________________?

The angle of taper on draft tube is
A. greater than 15°
B. greater than 8°
C. greater than 5°
D. less than 8°
E. less than 3°.

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