单项选择题
A.HIDE_VIEW
B.SHOW_VIEW
C.SET_CANVAS_PROPERTY
D.REPLACE_CONTENT_VIEW
单项选择题 YouneedtobaseadatablockontheEMPtable,butyoudonotwanttogivetheusersoftheapplicationaccessprivilegesonthetable.Whichtypeofdatasourcewouldyouusetocreatethedatablock?（）
单项选择题 Youneedtodisplayaverylargesingle-recorddatablock.Sinceitwillbesolarge,aconvenientmeansofnavigationisneededbetweenitems.Whichtypeofcanvaswouldyouusetodisplaythedatablock?（）
单项选择题 WhichvalueisvalidfortheiterateparameterintheCREATE_TIMERbuilt-infunction?（）