下列哪种格式只支持256色：

在Photoshop中打印文件时，有关Bleed(出血)的说法正确的是?()

Directions:

Inthissectionyouwillheararecordedshortpassage.Thepassageisprintedinthetestpaper,butwithsomewordsorphrasesmissing.Thepassagewillbereadtwotimes.YouarerequiredtoputthemissingwordsorphrasesontheAnswerSheetinorderofthenumberedblanksaccordingtowhatyouhear.Ithinkwe'llmbeginnow.FirstI'dliketowelcomeyouallandthankyouforyourcoming,especiallyatsuchshortnotice.Iknowyouareallverybusyandit'sdifficulttotaketimeawayfromyour______formeetings.Asyoucanseeontheagenda,todaywewillfocusontheupcoming______.Firstwe'lldiscussthegroupsthatwillbecominginfromGermany.Afterthat,we'lldiscusstheNorthAmericanTours,______bytheAsiantours.Iftime______,wewillalsodiscusstheAustraliantourswhicharebookedforearlySeptember.Finally,I'mgoingtorequestsomefeedbackfromallofyou______lastyear'stoursandwhereyouthinkwecanimprove.

下面对样式选项栏描述正确的是：

水利工程档案保管期限分为()。