Yuri created a formula for a button. The code is supposed to set the value of an existing field called title. He used the following formula: title:= @propercase (title); after the foumula runs ,the title field is null. Why? （）

单项选择题Derekhascreatedaviewintheproducts.nsfdatabase.Derekwantsthemarkupcolumnintheviewtodisplaythesellingpriceofthecost.Hewantsthisvaluetodisplayincurrency.Whichoneofthefollowingshouldderekldo?（）

A. use the @currenty in thr column formula in the view  
B. Select currency on the numbers tab in the view properties box 
C. Select currency on the numbers tab in the column properties box 
D. Select currency on the numbers tab in the field properties box 

单项选择题nadiawouldliketopositionoverlappingblocksofcontentonaforminthevideoapplication.shewantstheflexibilitytocontrolthesizeandcontentoftheinformation.whichoneofthefollowingshouldnadiausewhencreatingherform?（）

A. layers
B. subforms 
C. framesets 
D. style sheets

单项选择题Krstinhascreatedapageinthevideosapplication.whichoneofthefollowingstatementsaboutpagesisnottrue?（）

A.pages are design elements
B.Pages can be full-text indexed 
C.pages  can be referenced by outlines or frames  
D.pages  can include text,graphics ,applets,and links

单项选择题Whichoneofthefollowing@Functiontoall response and responsetoresponse documentsofparentdocuments?（）

A.@Responses      
B.@AllChildren    
C.@AllResponses  
D.@AllDescendants 

单项选择题whichoneofthefollowingshouldmariadotodisplaythereleasedateinatextcolumn?（）

A.used the number and time format options 
B.used the @date to text functions to convert time to text 
C.concatenated the date types using mathematical operators 
D.used the @text functions to convert time and number data to text in text columns