单项选择题在下图中，阴影部分区域可用表达式（）来表示。 A. (x=b)&&(x (x (x=b)&&(x (x<=a)&&(b<=x<=c)
单项选择题The shareholders' capital stock master file is used as the basis for the payment of dividends and also acts as a check on the accuracy of the common stock balance in the general ledger. （ ）A.对B.错
