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greets · 发表于 2012-10-18 15:55:40

The transfer of heat and water vapor from the ocean to the air above it depends on a disequilibrium at the interface of the water and the air. Within about a millimeter of the water, air temperature is close to that of the surface water, and the air is nearly saturated with water vapor. But the differences, however small, are crucial, and the disequilibrium is maintained by air near the surface mixing with air higher up, which is typically appreciably cooler and lower in water-vapor content. The air is mixed by means of turbulence that depends on the wind for its energy. As wind speed increases, so does turbulence, and thus the rate of heat and moisture transfer. Detailed understanding of this phenomenon awaits further study. An interacting—and complicating—phenomenon is wind-to-water transfer of momentum that occurs when waves are formed. When the wind makes waves, it transfers important amounts of energy—energy that is therefore not available to provide turbulence.

The passage suggests that if on a certain day the wind were to decrease until there was no wind at all which of the following would occur?

(A) The air closest to the ocean surface would become saturated with water vapor.

(B) The air closest to the ocean surface would be warmer than the water.

(C) The amount of moisture in the air closest to the ocean surface would decrease.

(D) The rate of heat and moisture transfer would increase.（A）

(E) The air closest to the ocean would be at the same temperature as air higher up

为啥这题选A? 因为风停了上面的相对干燥的空气就不下来和水面空气混合了？然后水面空气就充满水了？

The passage suggests that if on a certain day the wind were to decrease until there was no wind at all which of the following would occur?

(A) The air closest to the ocean surface would become saturated with water vapor.

(B) The air closest to the ocean surface would be warmer than the water.

(C) The amount of moisture in the air closest to the ocean surface would decrease.

(D) The rate of heat and moisture transfer would increase.（A）

(E) The air closest to the ocean would be at the same temperature as air higher up

为啥这题选A? 因为风停了上面的相对干燥的空气就不下来和水面空气混合了？然后水面空气就充满水了？

竹林中人 · 发表于 2012-10-18 20:08:13

求解答

sky9219 · 发表于 2012-10-18 21:03:13

文章说近水面的空气和水是存在一种不平衡的，而这种不平衡很小，并且是通过风来维持的。。。于是风停—〉不平衡消失—〉近水面的空气饱和。。。

金dua · 发表于 2012-10-19 01:17:16

就是选A，楼上说的对，文章中说的平衡是风起作用，才让近水面的空气中的水变少，白话说也就是吹走了呗，没风了，水蒸气自然不会被吹走，所以就是A了。

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