下列说法中正确的是( ) I 在计算机中,所表示的数有时会发生溢出,其根本原因是计算机的子长有限 II 8421 码就是二进制数。 III 一个正数的补码和这个数的原码表示一样,而正数的反码是原码各位取反 IV 设有两个正的规格化浮点数: N1=2m*M1.N2=2n*M2, 若 m>N 则 N1>N2.
【简答题】阅读理解。 Mrs. Allen's husband died ten years ago when her son and daughter were still in high school. Mr. Allen had left some money, and since Mrs. Allen had managed a bookstore before she was married, s...