單項選擇題函數(shù)LEN(ALLTRIM(″ Made in China ″))的值為().

A.15
B.17
C.11
D.13


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1.單項選擇題使用index命令創(chuàng)建降序索引時,應選擇參數(shù)().

A.ADDITIVE
B.UNIQUE
C.ASCENDING
D.DESCENDING