问题:[选择题]
A.PrivateSubCommand1_Click()DimMyRecordAsRecord,PositionOpen"d:F1.dat"ForRandomAs#1Len=Len(MyRecorPosition=4Get#1,Position,MyrecordClose#1EndSub
B.PrivateSubCommand1_Click()DimMyRecordAsRecord,PositionOpen"d:F1.dat"ForRandomAs#1Len=Len(MyRecorPosition=4Put#1,Position,MyRecordClose#1EndSub
C.PrivateSubCommand1_Click()DimMyRecordAsRecord,PositionOpen"d:F1.dar"ForOutPutAs#1Len=Len(MyRecorPosition=4Get#1,Position,MyRecordClose#1EndSub
D.PrivateSubCommand1_Click()DimMyRecordAsrecord,PositionOpen"d:F1.dat"ForlnputAs#1Len=Len(MyRecorPosition=4Get#1,Position,MyRecordClose#1EndSub
● 参考解析
由于是以随机方式访问该文件,故打开方式为Random。选项C以Output方式打开,选项D以Input方式打开都是错误的。同时由于要读出第四条记录,故使用Get#语句。