LFG tank and pipeline maintenance should include().
- Aexclusion of all sand and solid matter
- Bcleaning with clean fresh or sea water
- Cexamination for fractures and pitting
- DAll of the above
LFG tank and pipeline maintenance should include().
1、Your tank vessel is fully loaded, and
Your tank vessel is fully loaded, and you find that she is down slightly by the head. To adjust the trim, you may().Aadd ballast aftBload more cargo aftCshift cargo aftDAll of the above
Pipelines are not ()ALabor-intensiveBcapital-intensiveCtech-intensiveDLow cost and high return
管道运输(Pipeline transport)
4、In moderate wind and current what shou
In moderate wind and current what should be the length of chain with a single anchor?()A5 times the depth of the water in good holding gro...
Pipelines are not ()A labor-intensiveB capital-intensiveC tech-intensiveD low cost and high return
6、Flames from small leaks of LFG may be
Flames from small leaks of LFG may be extinguished by().Autilizing carbon dioxide or dry chemical fire extinguishersButilizing soda and acid fire extinguishersCblowing the flames outDletting it burn itself out