1.

________VALVES_ARE_KNOWN_AS_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ‚À´WASHOUT_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖŒÄ_VALVES.?$#

A. Drain valves
B. Scour valves
C. Check valves
D. Sluice valves
Answer» B. Scour valves


Discussion

No Comment Found