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A.bit B.byteC.blockD.fileThe smallest unit of informati……

The smallest unit of information in a computer system is called a (72) .

A.bit
B.byte
C.block
D.file
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单项选择题Computer systems consist of two very different types of elements:Hardware, which includes all the physical things that can be touched and (71) ,which tells the hardware how to do.

A.Operating system
B.I/O devices
C.Courseware
D.Software

单项选择题某公司下设4个分公司A、B、C、D,上月各分公司的销售额及其在总公司所占比例如下表所示。由于此表单受潮,有些数据看不清了,但还可以推算出来。根据推算,D公司上月的销售额为(68)万元。()

A.50
B.100
C.150
D.200