单项选择题
A. the address field is computed
B. jim should have used a text popup
C. jim stored the field hint in the database
D. field hint only display when the user has not clicked in the field （field hint）
单项选择题 ackiewantstoremoveanactionhotspotbutleavetheimageonhisvideoform,inwhichoneofthefollowingwayscanhedothis?（）
单项选择题 tommyhascreatedasalesviewinhissales.nsfdatabase.Tommywantsnegativenumbersinthesalesnumbercolumnintheviewparenthesis.whichoneofthefollowingshouldtommydo?（）
单项选择题 Yuricreatedaformulaforabutton.Thecodeissupposedtosetthevalueofanexistingfieldcalledtitle.Heusedthefollowingformula:title:=@propercase(title);afterthefoumularuns,thetitlefieldisnull.Why?（）