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[主观题]

Evaporation rates of hydrocarbon liquid from horizontal surfaces are approximately given by Where

Evaporation rates of hydrocarbon liquid from horizontal surfaces are approximately given by

Evaporation rates of hydrocarbon liquid from horiz

Where p is vapor pressure of the liquid and P is the atmospheric pressure. We have spilled a layer of lubricating oil on a metal drip pan in our garage. It forms a layer 1 mm thick. Its density is 1g/cm3and its molecular weight is 400 g/mol. Its vapor pressure is approximately 10-7torr at 20℃. Estimate how long it will take all of this motor oil to evaporate at 20℃.

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更多“Evaporation rates of hydrocarbon liquid from horizontal surfaces are approximately given by Where”相关的问题

第1题

蒸发散热(evaporation)

蒸发散热(evaporation)

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第2题

An underwriter is liable for ______.A.loss arising from the subject itself because of its

An underwriter is liable for ______.

A.loss arising from the subject itself because of its inherent qualities

B.loss caused by the ordinary evaporation of liquids

C.loss caused by heavy weather

D.the natural decay of the vessel due to the passage of time

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第3题

Dustfall rates (sediment accumulations from the air) can be up to 100 tons/(square mile.month).

Dustfall rates (sediment accumulations from the air) can be up to 100 tons/(square mile.month).

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第4题

When carbon is added to iron in proper _____ the result is steel.

A.rates

B.densities

C.proportions

D.thicknesses

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第5题

Politically these nations tend to be ______, with very high birth rates but poor education and very low levels of literacy.

A.unsteady

B.unstable

C.rational

D.reluctant

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第6题

Applying an interest rate yardstick to forest management means that land, labor, and capital would b
e allocated to wood production as long as expected rates of return were equal to or above those available elsewhere.
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第7题

In 2013, physical health______its lowest point in the past six years, largely due to risin
g rates of overweight.

A.attained

B.arrived at

C.reached

D.went to

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第8题

For a variety of reason, school participation rates for females almost always lag behind t
hose of males in developing countries.

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第9题

An investor purchases one municipal(市政债券) and one corporate bond that pay rates of r

An investor purchases one municipal(市政债券) and one corporate bond that pay rates of return of 8% and 10% respectively. If the investor is in the 15% tax bracket, his after tax rates of return on the municipal and corporate bonds would be respectively

A)6.4% and 8%;

B)6.8% and 10%;

C)8% and 8.5%;

D)8% and 10%

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第10题

The term used in levying customs duties when such are fixed at rates proportioned to estim
ated value of goods concerned is ______.

A.ad valorem

B.infinite

C.secure

D.specific

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第11题

To this are added the data on expected royalties, tax rates, ect, including their probable variation. 在这一项上,还要加上预期的矿区使用费、税率等及其可能变化的数据。()
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