Instruct all crew members that participation in training sessions on occupational safety is .(A)m

問題詳情

22.Instruct all crew members that participation in training sessions on occupational safety is .
(A)mandatory
(B)voluntary
(C)unnecessary
(D)unquestionable

參考答案

答案：A
難度：適中0.466667
統計：A(7),B(3),C(2),D(3),E(0)

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