问题
单项选择题
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
答案
参考答案：B
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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
参考答案：B