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单项选择题V5.x系统中，删除动环网管Sybase数据库scanbus表中前置机ID为1且总线ID为3的SQL语句应该是（）

A、delete*from scanbus where qzj_id=1 and scanbus_id=3

B、deletefrom scanbus whereqzj_id=1 and scanbus_id=3

C、del*from scanbus where qzj_id=1 and scanbus_id=3

D、delfrom scanbus where qzj_id=1 and scanbus_id=3

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