【简答题】A.He needs to press F-7 to return to the document before be prints it. B.He has to print the document to see the page numbers. C.The printer is not working correctly. D.The numbers are on the screen b...
【简答题】A.He needs to sleep for three or four hours. B.He wants to buy a set of coffee cups. C.He will need more than one cup of coffee. D.He has been wide awake for time.