海船船员考试
单选题The （）pump is usually used as the emergency bilge pump.A turbineB screwC vaneD ejector
题目
turbine
screw
vane
ejector
相似问题和答案
第1题：
The application tables owned by the user TEST in a test database need to be exported to the APPS schema in the production database by using Data Pump. Which option of Data Pump Import would you use to accomplish this？（）
- A、 owner
- B、 touser
- C、 attach
- D、 remap_schema
正确答案:D
第2题：
Open the bilge pump for inspection
Remove each of the manifold valves
Remove only the manifold valve to the affected bilge-well
Attempt to pump out another bilge well to determine if the entire system is affected
第3题：
What can be used to cover bilge before loading?
第4题：
turbine
screw
vane
ejector
第5题：
turbine
screw
vane
ejector
第6题：
must be fixed if the vessel exceeds 12 meters in length
may be used as a fire pump
must be portable if there are more than 4 watertight compartments
must be capable of pumping at least 450 gpm
第7题：
dependent
in dependent
in series
in parallel
第8题：
How to pump out bilge water in the engine room?
第9题：
primarily to lubricate the shaft seals
due to the inability of this type of pump to lift water to cover the suction (eye) of the impeller
to initially unload the pump by having its head pressure equal to discharge pressure
in order to overcome the potential energy of water in the discharge line
第10题：
owner
touser
attach
remap_schema