题目内容
（请给出正确答案）
OIL-IN-WATER are ______．
A.sediment of oil in water
B.oil dissolvents in water
C.solid oil aggregates
D.droplets of oil suspended in water
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A、
B、
C、
D、
Coal gangue (矸石) is a complex industrial solid waste discharged(排出) when coal is excavated (挖掘) and washed in the production course. Its major chemical composition is SiO2 and Al2O3, and its major mineralogical (矿物学的) composition is quartz and feldspar (长石). The amount of coal gangue accumulated in China has already reached 3.8 billion tons; moreover, the stockpile (库存) of gangue is increasing at a rate of 0.2 billion tons per year. The disposal of such a large quantity of this solid waste requires a lot of land and has caused many serious environmental problems.
A、If only
B、As for
C、Despite of
D、Thanks to
A、Land Occupation
B、Air Pollution
C、Soil Pollution
D、Water Pollution
A、Land occupation
B、Lower down environmental impact
C、Water pollution
D、Air pollution
A、Land Occupation
B、Air Pollution
C、Soil Pollution
D、Water Pollution
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