大氣的組成是由()
A、78%的氮氣,21%的氧氣以及1%的其它氣體組成A
暫無解析
Constructionoftherailwayshelpedtodevelopthenational_______ofTanzaniaandZambia.
Theaddressbook________theemailaddressesofyourfriendsorgroupsofcolleagues.
________fromtheoccasionallatenightparty,ourneighborsareveryquiet.
Iwishyou________likethat.
設A為3階矩陣,|A|=3,*A為A伴隨矩陣,若交換A的第1行與第2行得矩陣B,則|BA|=()