单项选择题
	A.@Number(Date)-30       
	B.@Adjust(Date;0;0;30;0;0;0) 
	C.@Adjust(Date;0;0;-30;0;0;0) 
	D.@If(Date!="";Date-30;@Failure(There is no current release date")) 
单项选择题 whichoneofthefollowingstatementswouldleeincludeinanagenttolimitthedocumentsprocessedbytheagenttothoseforwhichthevalueofthetypefieldis"action"?()
单项选择题 whichoneofthefollowingbestwherelayercanbeused?()
单项选择题 Derekhascreatedaviewinthesales.nsfdb.Derekwantsthesalesvaluecolumnintheviewtobepunctuatedtodisplaytwodecimalplaces.whichoneofthefollowingshouldhedo?()