為減輕鋼軌磨耗速度，下列敘述何者錯誤？(A)鋼軌頭部軌距側塗油 (B)鋼軌頭部頂面塗油(C)外軌舖設硬頭鋼軌 (D)視磨耗情況必要時內軌及外軌均舖設硬頭鋼軌。

問題詳情

47.為減輕鋼軌磨耗速度，下列敘述何者錯誤？
(A)鋼軌頭部軌距側塗油
(B)鋼軌頭部頂面塗油
(C)外軌舖設硬頭鋼軌
(D)視磨耗情況必要時內軌及外軌均舖設硬頭鋼軌。

參考答案

答案：B
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