19.在BASIC中,用 OPEN"MY.DAT" FOR INPUT AS #2 開檔後,假定已順利地讀出資料,用下列那一個敘述可成功地關檔(A)CLOSE"MY.DA
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19.在BASIC中,用 OPEN"MY.DAT" FOR INPUT AS #2 開檔後,假定已順利地讀出資料,用下列那一個敘述可成功地關檔 (A)CLOSE"MY.DAT" FOR INPUT AS #2 (B)CLOSE"MY.DAT" AS #2 (C)CLOSE "MY.DAT" FOR INPUT (D)CLOSE #2