单选题Accumulations of oily rags should be（）.Akept in nonmetal containersBdiscarded as soon as possibleCcleaned thoroughly for reuseDkept in the paint locker
单选题
Accumulations of oily rags should be（）.
A
kept in nonmetal containers
B
discarded as soon as possible
C
cleaned thoroughly for reuse
D
kept in the paint locker
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解析：
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