Why didn't Professor Foley talk with Jean after class?
A.He did not see her.
B.He was busy answering his students' questions.
C.He was receiving an award.
D.He was collecting signatures from three other faculty members.
第1题
(2 )有一条指令用十六进制表示为 CD21 ,用二进制表示为()。
A ) 1101110000100001
B ) 110011010010000l
C ) 1100110100010010
D ) 1101110000010010
第2题
A.1101110000100001
B.1100110100100001
C.1100110100010010
D.1101110000010010
第3题
A.1101110000100001
B.1100110100100001
C. 1100110100010010
D.1101110000010010
第6题
十六进制CD21表示为二进制是()。
A.ii01110000100001
B.1100110100100001
C.1100110100010010
D.1101110000010010
第9题
若用8 位机器码表示二进制数-111,则原码表示的十六进制形式为 (17) ;补码表示的十六进制形式为 (18) 。
(17)
A.81
B.87
C.0F
D.FF
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