取字符串s的倒数第i个字符，正确的表达式是（ ）。 A: Mid(s,i,1) B: Mid(s,Len(s)-i,1) C: Mid(s,Len(s)-i-1,1) D: Mid(s,Len(s)-i+1,1)
取字符串s的倒数第i个字符，正确的表达式是（ ）。 A: Mid(s,i,1) B: Mid(s,Len(s)-i,1) C: Mid(s,Len(s)-i-1,1) D: Mid(s,Len(s)-i+1,1)
The mid-1990s=1990年中期
The mid-1990s=1990年中期
是1990s还是1990’s
是1990s还是1990’s
It is not rare in that people in their fifties are going to university for furthereducation.( A: 1990s B: the 1990 C: 1990's D: the 1990s
It is not rare in that people in their fifties are going to university for furthereducation.( A: 1990s B: the 1990 C: 1990's D: the 1990s
设S="中华人民共和国",表达式Left(S,1)+Right(S,1)+Mid(S,3,2)的值为()
设S="中华人民共和国",表达式Left(S,1)+Right(S,1)+Mid(S,3,2)的值为()
The MidAutumn Festival dating back in China’s Tang Dynasty．
The MidAutumn Festival dating back in China’s Tang Dynasty．
Since the mid-1990s, the world cotton price has dropped more than half.______
Since the mid-1990s, the world cotton price has dropped more than half.______
已知三阶矩阵$A$满足$\mid A-E\mid=\mid A-2E\mid=\mid A-3E\mid=0$，则$\mid A\mid$=( )。 A: $4$ B: $6$ C: $12$ D: $3$
已知三阶矩阵$A$满足$\mid A-E\mid=\mid A-2E\mid=\mid A-3E\mid=0$，则$\mid A\mid$=( )。 A: $4$ B: $6$ C: $12$ D: $3$
The acronym “MICE” came into being in the mid 1990s, it's fully recognized that the term MICE relates to meetings,______ ,______ ,______ .
The acronym “MICE” came into being in the mid 1990s, it's fully recognized that the term MICE relates to meetings,______ ,______ ,______ .
设$A,B$是$n$阶正交矩阵，且$\mid A\mid=-\mid B\mid$，则( ). A: $A+B$可逆 B: $A+B$不可逆 C: $\mid A+B\mid=1$ D: $\mid A+B\mid=-1$
设$A,B$是$n$阶正交矩阵，且$\mid A\mid=-\mid B\mid$，则( ). A: $A+B$可逆 B: $A+B$不可逆 C: $\mid A+B\mid=1$ D: $\mid A+B\mid=-1$