問題詳情
57. 潛水計時器須多久檢點一次
(A)每週
(B)每月
(C)每季
(D)每年。
(A)每週
(B)每月
(C)每季
(D)每年。
參考答案
答案：C
難度：適中0.5
統計：A(0),B(1),C(1),D(0),E(0)
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