填空题. A—to select power management mode B—to show hidden files C—to select the path name for the file D—to rename an existing file E—to complete a document F—to select the text you want to print G—to move to the start of the current line H—to delete the current line I—to delete the current selection J—to open second edit window K—to close second edit window L—to open the file in read-only mode M—to click the item you want to change N—to display information about edit O—to confirm each replacement