contestada

4. How were U-Boats powered?
a. Hand crank
c. Battery
e. None of these
b. Diesel
d. Both B&C
f. All of these

Respuesta :

Answer:  f

fExplanation:

Answer:

b. diesel

Explanation:

was developed to draw outside air so that the diesel engines could operate while the submarine is just below the surface at periscope depth