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【单选题】
如图是判断闰年的程序,以下说法正确的是A.
程序存在错误，从第二行开始应该有缩进。
B.
程序存在错误，第二行代码中的or应该换成and 。
C.
程序存在错误，第二行代码中的(year % 4 == 0) and (year % 100 != 0)应当用括号括起来，否则会出现逻辑错误。
D.
程序正确，可以执行。
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【简答题】下位学习
【单选题】What is the relationship between present value and future value interest factors?
A.
The present value and future value factors are equal to each other.
B.
The present value factor is the exponent of the future value factor.
C.
The future value factor is the exponent of the present value factor.
D.
The factors are reciprocals of each other.
E.
There is no relationship between these two factors.
【单选题】The(74)has several major components, including the system kernel, a memory management system, the file system manager, device drivers, and the system libraries.
A.
application
B.
information system
C.
network
D.
operating system
【单选题】Smoking not only ______ the throat but can also cause cancer, loss of appetite and irregular heart beat.
A.
irritates
B.
induces
C.
intimidates
D.
invades
【简答题】调整现值法(adjusted present value)
【简答题】某32位计算机采用二级页表的分页存储管理方式,按字节编址,页大小为4KB,页表项大小为4B。某进程的页表内容如图所示,图中的数字为十进制。请回答以下问题: (1) 逻辑地址结构中,页内地址占___位,二级页号(外层业内地址)占____位,一级页号(外层页号)占______位。 (2) 计算十六进制逻辑地址00402FA5对应的十六进制物理地址。
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