A. high initial and maintenance cost
B. lower discharge
C. lower speed of operation
D. necessity of air vessel
E. all of the above
Correct Answer: high initial and maintenance cost ✔
Last Updated: January 24, 2019
A. high initial and maintenance cost
B. lower discharge
C. lower speed of operation
D. necessity of air vessel
E. all of the above
Correct Answer: high initial and maintenance cost ✔
Last Updated: January 24, 2019