单项选择题
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
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? （）
单项选择题 According to the Chemical Data Guide，1，3 - pentadiene possesses which characteristic? （）
单项选择题 According to regulations，access to a cargo pumproom in a tank vessel carrying grades C or D liquid cargo shall be（）.