第九届全国人大常委会第二十三次会议决定
Which two options can be used as traffic descriptors when classifying and marking traffic？ （） ["incoming interface","Layer 2 differentiated services code point （DSCP）","Layer 3 IP precedence","outgoing interface"]
商业上称为桂榴石的宝石是（） ["铁钙铝榴石","镁铝榴石","锰铝榴石","钙铁榴石"]
简述地源热泵系统的形式。
按幼儿园教育活动的学科性质，可以将幼儿园教育活动分成哪几类活动？
度量借款人的“5C”分别指什么内容？
