The boiling and condensation points of a refrigerant depend on the （） exerted upon it...

第1题

[] When the heavy fuel oil is heated to achieve the viscosity of 10-15 cst, may occur.To avoid this, a system is used in most occasions（）

A、A.boiling and cavitations; low temperature B、B.boiling and cavitations; pressurized C、C.leaking and boiling; low temperature D、D.leaking and boiling; pressurized

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第2题

[单选题] The boiling and condensation points of refrigerant mainly depend on the （） exerted upon it.

A、temperature B、density C、volume D、pressure

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第3题

[单选题] When a vacuum boiling evaporator works, the hot jacket water will pass over the tube stack and （） the sea water passing through the tubes.

A、dispose B、dissolve C、heat D、dissipates

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第4题

[单选题] Because of the reduced （） in the vacuum boiling evaporator, some of the sea water boils as it flows through the tubes.

A、temperature B、water level C、pressure D、rate of flow

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第5题

[单选题] In （）, hot diesel engine jacket water passes over the stack and heats the sea water passing through the tubes.

A、a flash generator B、a flash evaporator C、a vacuum boiling evaporator D、a boiler

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第6题

[单选题] A refrigerant boils and vaporizes in the （） in a compression refrigeration system.

A、liquid receiver B、compressor C、condenser D、cooling coil

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第7题

[单选题] （） water is more expensive than fresh water It has high specific heat and low viscosity.

A、Distilled B、Distilling C、Boiling D、Boiled

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第8题

[单选题] The process of boiling seawater in order to separate it into freshwater vapor and brine is usually defined as （）.

A、dehydration B、condensation C、evaporation D、dissolution

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第9题

[单选题] During transfer operations，a quantity of propylamine spills on deck. According to the Chemical Data Guide，the correct procedure would be to（）.

A、immediately flush the spill with large quantities of fresh water B、cover the contaminated surface with soda-ash-soaked lime solution C、add sodium bisulfate on the contaminated surface and spray it down with water D、move to a position upwind of the spill and allow the product to boil off

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The boiling and condensation points of a refrigerant depend on the （） exerted upon it.

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