8. 下列敘述何者不是”確定職業性氣喘(Definite Occupational Asthma)”的必要診斷條件？
(A) Workplace exposure to agent known to cause occupational asthma
(B) Work-related changes in FEV1 or PEF
(C) Work-related changes in bronchial responsiveness
(D) Positive response to specific inhalation challenge test

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統計： A(2), B(0), C(0), D(0), E(0) #2824682