A.20---25 B.17---19 C.11---16 D.1---10
參考下列語(yǔ)句: 問(wèn),上述語(yǔ)句創(chuàng)建了幾個(gè)連接池來(lái)管理這些Sqlconnection對(duì)象?()
A.1 B.2 C.3 D.4
A.executescalar B.executexmlreader C.executereader D.executenonquery