單項(xiàng)選擇題

The second stage feed-water temperature and shell absolute pressure in a multistage, flash type, distilling plant is （）

A.higher than the first stage feed-water temperature and absolute shell pressure
B.lower than the first stage feed-water temperature and absolute shell pressure
C.the same as the first stage feed-water temperature and absolute shell pressure
D.not related to the feed-water temperature and absolute shell pressure

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單項(xiàng)選擇題

The efficiency of a flash type evaporator can be increased by（）

A.lowering brine discharge density
B.decreasing the absolute pressure of each stage
C.increasing the saltwater feed heater temperature
D.increasing the pressure at the spray pipe

單項(xiàng)選擇題

In some modern large diesel engines, which of the following is used as the support for the main bearings?（）

A.Bedplate
B.Block
C.Base
D.Sump

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The second stage feed-water temperature and shell absolute pressure in a multistage, flash type, distilling plant is （）

你可能感興趣的試題

The efficiency of a flash type evaporator can be increased by（）

In some modern large diesel engines, which of the following is used as the support for the main bearings?（）