题目内容
(请给出正确答案)
[多选题]
Nonengineering materials are(), which do not become part of the product
A.chemicals
B.fuels
C.lubricants
D.other materials used in the manufacturing process
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A.chemicals
B.fuels
C.lubricants
D.other materials used in the manufacturing process
A.scarcely
B.eventually
C.previously
D.exactly