While every effort is made to ensure that the data provided through the Notices to Mariners service is accurate,the user needs to be aware of the risks to corruption of data. It is important that the user should only use the data on suitable equipment and that,other applications should not be running on the user's machine at the same time. Users should exercise their professional judgement in the use of data,and also consult the Mariners Handbook (NP100) for further details. The user needs to be aware that there is a possibility that data could be corrupted during transmission,or in the process of display or printing on the user's equipment,or if converted to other software formats,and is accordingly advised that the UKHO cannot accept responsibility for any such change,or any modifications or unauthorised changes,made by licensees,or other parties. 021.The data may become corrupted in any of the following process except _______. A. during transmission B. in the display or printing on the user's equipment C. in converting to other software formats D. in air mail delivery to the readers 022.The use of the data is advised to consult _______ for further details. A. Mariners Handbook B. Sailing Directions C. Guide to Port Entry D. Notices to Mariners 023.Of the following items _______ is not mentioned for which UKHO will accept no responsibility. A. change in the process of display or printing B. unauthorised changes made by licensees or other parties C. modifications made by licensees or other parties D. professional amendments 024.It is implied that _______. A. the data are incorrect B. the data are to be corrected intensively C. although the data are accurate enough,you are still advised to use it with caution D. not to use it if you have not enough time or proper equipment to effect necessary correction