将苦味酊涂在吮指癖患儿的手指上进行治疗属
A. 代币法
B. 森田疗法
C. 满灌法
D. 厌恶疗法
E. 系统脱敏法
For 8051 single chip microcomputer, its internal RAM 20h-2FH unit is used.
A. Bit only addressing
Byte addressing only
C. It can be bit addressable and byte addressable
D. Only a few bits can be addressed
After the MCS-51 is reset, the MCU starts to execute instructions from the () unit of ROM.
A. 0001H
B. 0000H
C. 0003H
D. 0023H
The program counter PC of 8051 is a 16 bit counter, and its addressing range is ()
A. 8K
B. 16 K
C. 32 K
D. 64 K
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