阿摩線上測驗
16. Lubricant oil filters remove contaminants more efficiently if the oil-bearing filtered is .
(A) under high pressure
(B) under low pressure
(C) heated to reduce viscosity
(D) cooledto increase viscosity
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統計： A(10), B(7), C(29), D(1), E(0) #1234888
統計： A(10), B(7), C(29), D(1), E(0) #1234888
