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问题 单项选择题 A1/A2型题

女患者，阴部干涩，灼热瘙痒，五心烦热，头晕目眩，耳鸣，腰酸。舌红少苔，脉细数无力。治宜（）

A.清热解毒，除湿止带

B.行气祛湿止带

C.滋肾降火，调补肝肾

D.清热利湿，杀虫止痒

E.健脾益气，升阳除湿

答案

参考答案：C

单项选择题

The blue of the sea is caused by the scattering of sunlight by tiny particles suspended in the water. Blue light, being of short wavelength, is scattered more efficiently than light of longer wavelengths. Although waters of the open ocean are commonly some shade of blue, green water is commonly seen near coasts, especially in tropical or subtropical regions. This is caused by yellow pigments being mixed with blue water. Phytoplankton are one source of the yellow pigment. Other microscopic plants may color the water brown or brownish-red. Near the shore, silt or sediment in suspension can give water a brownish hue. Outflow of large rivers can often be observed many miles offshore by the coloration of suspended soil particles.Marine phytoplankton (Greek for "plant wanderers") are microscopic single-celled plants that include diatoms, dinoflagellates, coccolithophorids, green algae, and blue-green algae, among others. The growth of these organisms, which photosynthesize light, depends on a delicate balance of nutrient enrichment via vertical mixing, which is often limited by the availability of nitrogen and light. Diatoms are one-celled plants with patterned glass coverings. Each glass, or silicon dioxide box, is ornamented with species-specific designs, pits, and perforations making them popular with microscopists and, more recently, electron scanning microscopists.

The growth of phytoplankton is often limited by the availability of________.

A．oxygen

B．hydrogen

C．nitrogen

D．carbon dioxide
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问答题 论述题

原油中含水对炼制加工有什么危害性？
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