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[主观题]
The term "pour point" is defined as the lowest temperature at which lubricating oils will
flow _____.
A.rapidly
B.by gravity
C.through a standard orifice at a specified temperature
D.at a rate of 60cc per second
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
A.rapidly
B.by gravity
C.through a standard orifice at a specified temperature
D.at a rate of 60cc per second
第1题
A.banjo feed
B.splash feed
C.gravity feed
D.pressure feed
第2题
A.at high speed and full load
B.at low speed and part load
C.when heavy fuel oil is used at sea
D.when the ships run long distance
第3题
A.conduction
B.radiation
C.convection
D.advection
第4题
A.at the jacket cooler outlet to control the flux through the engine
B.at the jacket cooler outlet to control the flux through the cooler
C.at the engine outlet to control the flux through the engine
D.at the engine inlet to control the flux through the engine
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