下列表达式T-S的值是()S={1010,"1010",78.9}T={1010,"1010",12.3,1010,1010}
A. {1010,"1010"}
B. {78.9}
C. {12.3}
D. {1010,"1010",12.3}
下列表达式S-T的值是()S={1010,"1010",78.9}T={1010,"1010",12.3,1010,1010}
A. {1010,‘1010’}
B. {78.9}
C. {12.3}
D. {1010,"1010",12.3}
下列表达式S&T的值是()S={1010,"1010",78.9}T={1010,"1010",12.3,1010,1010}
A. {1010,‘1010’}
B. {1010,‘1010’,12.3,78.9}
C. {1010,‘1010’,12.3,78.9,1010,1010}
D. {1010,"1010",12.3}
下列表达式S^T的值是()S={1010,"1010",78.9}T={1010,"1010",12.3,1010,1010}
A. {78.9,12.3}
B. {1010,78.9,'1010'}
C. {1010,"1010",12.3}
D. {1010,‘1010’,12.3,78.9,1010,1010}