[单项选择题] left(“Asp.net”,4)的值为()A,”A、sp”B,”.net”C,”A、sp.”D,”
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[单项选择题] left(“Asp.net”,4)的值为()A,”A、sp”B,”.net”C,”A、sp.”D,”A、spn”
A.,”A、sp”
B.,”.net”
C.,”A、sp.”
D.,”A、spn”
参考答案: