单项选择题

After making the required notification that a large oil spill into the water has occurred，the FIRST action should be to（）.

A.apply straw or sawdust on the oil
B.contain the spread of the oil
C.throw grains of sand into the oil
D.have the vessel move out of the spill area

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单项选择题
According to the Chemical Data Guide，which reactive group(s) is are not compatible with the products polybutene and o-xylene? （）

A.Nitric acid
B.Amides
C.Alcohols，glycols
D.Phenols，cresols
单项选择题
According to the Chemical Data Guide，1，3 - pentadiene possesses which characteristic? （）

A.Colorless liquid，mild aromatic odor
B.Pale yellow liquid，strong odor
C.Colorless liquid，faint odor
D.Straw-colored liquid，sweet-odor
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