According to the doctor, why did few people live to be sixty in the 19th century?
A. Because many people lived in poverty.
Because there were many road accidents.
C. Because there was no advanced medicine.
D. Because a woman had many children.
查看答案
What causes the high death rate today?
A. Dangerous diseases.
B. Traffic accidents.
C. Too many children.
D. Few doctors and little medicine.
十进制数39，用压缩BCD码表示为（）
A. 39D
B. 0309H
C. 39H
D. 00100111
下列指令错误的是（）
A. MOV [2000H], BX
B. MOV [2000H], 3000H
C. MOV [2000H], [BX]
D. MOV [2000H], SI
指令：MOV A[BX+SI], 2000H 中的目标操作数的寻址方式为（）
A. 基址变址寻址
B. 立即寻址
C. 直接寻址
D. 相对基址变址寻址
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