21. Experts have described employee work driven by TNC as a primary contributor to workplace violence. TNC refers to ________.
(A) time, neglect, and crises
(B) time, neglect, and chaos
(C) time, numbers, and crises
(D) time, number, and chaos

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統計： A(1), B(1), C(0), D(0), E(0) #2586816