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. 28. Whethe invasiobegin, many of Shanghai’s inhabitants flee from thecity_________________.
· and Jim’s parents leave to, but Jim gets separated from them
· and Jim’s parents do too
· but Jim’s parents stay
· and Jim leaves the city with his parents
这是一家总部在北京的公司。
·This is a Beijing-based company.
·This is a Beijing-base company
·This is a Beijing-basised company
·This is a Beijing-basis company.
Couldn’t you notice this room is ____________ large as the next one
·half as
·as half
·one third as
·three as
Africa is ________ beef to Europe.
·exporting
·importing
·absorbing
·discarding
The people living here have free _________ to that swimming pool.
·access
·excess
·excel
·recreation
–What are you looking for- I can’t remember where I ______ my glasses
·would leave
·leave
·had left
·left
家用电器如冰箱、空调、洗衣机中使用的单片机主要是利用了它的( )能力。
·高速运算
·海量存储
·远程通信
·测量控制
下列集成门电路中,具有与门功能的是( )
·74LS32
·74LS06
·74LS10
·74LS08
对程序存储器的读操作,只能使用( )
·MOV指令
·PUSH指令
·MOVX指令
·MOVC指令
MCS-51响应中断时,下面哪一个条件不是必须的( )
·当前指令执行完毕
·中断是开放的
·没有同级或高级中断服务
·必须有RETI
下面哪种设备不是输入设备( )
·A/D转换器
·键盘
·打印机
·扫描仪
可以为访问程序存储器提供或构成地址的有( )
·只有程序计数器PC
·只有PC和累加器A
·只有PC、A和数据指针DPTR
·PC、A、DPTR和SP
当8031外扩程序存储器8KB时,需使用EPROM2716( )
·2片
·3片
·4片
·5片
执行MOVX A,@DPTR指令时,MCS-51产生的控制信号( )
·/PSEN
·ALE
·/RD
·/WR
#include <reg51.h>与#include “reg51.h”是等价的。()
·正确
·错误
· and Jim’s parents leave to, but Jim gets separated from them
· and Jim’s parents do too
· but Jim’s parents stay
· and Jim leaves the city with his parents
这是一家总部在北京的公司。
·This is a Beijing-based company.
·This is a Beijing-base company
·This is a Beijing-basised company
·This is a Beijing-basis company.
Couldn’t you notice this room is ____________ large as the next one
·half as
·as half
·one third as
·three as
Africa is ________ beef to Europe.
·exporting
·importing
·absorbing
·discarding
The people living here have free _________ to that swimming pool.
·access
·excess
·excel
·recreation
–What are you looking for- I can’t remember where I ______ my glasses
·would leave
·leave
·had left
·left
家用电器如冰箱、空调、洗衣机中使用的单片机主要是利用了它的( )能力。
·高速运算
·海量存储
·远程通信
·测量控制
下列集成门电路中,具有与门功能的是( )
·74LS32
·74LS06
·74LS10
·74LS08
对程序存储器的读操作,只能使用( )
·MOV指令
·PUSH指令
·MOVX指令
·MOVC指令
MCS-51响应中断时,下面哪一个条件不是必须的( )
·当前指令执行完毕
·中断是开放的
·没有同级或高级中断服务
·必须有RETI
下面哪种设备不是输入设备( )
·A/D转换器
·键盘
·打印机
·扫描仪
可以为访问程序存储器提供或构成地址的有( )
·只有程序计数器PC
·只有PC和累加器A
·只有PC、A和数据指针DPTR
·PC、A、DPTR和SP
当8031外扩程序存储器8KB时,需使用EPROM2716( )
·2片
·3片
·4片
·5片
执行MOVX A,@DPTR指令时,MCS-51产生的控制信号( )
·/PSEN
·ALE
·/RD
·/WR
#include <reg51.h>与#include “reg51.h”是等价的。()
·正确
·错误