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43701
帧格式为1个起始位,8个数据位和1个停止位的异步串行通讯方式是方式()。
43702
定时器若工作在循环定时或循环计数场合,选用()较为合适。
43703
关于定时器,若振荡频率为12MHz,在方式1下最大定时时间为()。
43704
定时器T0工作在方式3时,定时器T1有()种工作方式。
43705
定时器/计数器T0的中断矢量地址是()。
43706
MCS-51定时器工作方式2是指的是()工作方式
43707
测量脉冲宽度时,GATE.INT1和TR1应分别为()。
43708
当选择常数自动重装载方式时,需要设置TMOD中的M1和M0分别为()。
43709
当T1 作为串行口波特率发生器时,T1不能工作于方式()
43710
计数器对由引脚T0或T1输入的外部脉冲的下跳沿计数,允许最高计数频率为晶振频率的()
43711
下列与定时/计数器无关的SFR是()。
43712
中断查询确认后,在下列各种单片机运行情况下,执行完当前机器周期内容后,能立即进行中断响应的是:()
43713
若MCS-51的所有中断源均处于同一优先级,则它们按自然优先级从高到低的顺序是()
43714
MCS-51有5个中断源,有()个中断优先级。
43715
MCS-51响应中断后,必须用软件清除的中断请求标志是()
43716
与中断系统无关的SFR是()
43717
外部中断采用边沿触发方式时,要求高、低电平()。
43718
发送中断TI和接收中断RI逻辑()后,做为内部的一个中断源
43719
中断查询确认后,在下列各种8031单片机运行情况中,能立即进行响应的是()
43720
下列说法正确的是()A.各中断源发出的中断请求信号,都会标记在MCS-51系统中的IE寄存器中。
43721
在MCS-51中,PC和DPTR都可作为指针,DPTR是为访问()存储器提供地址。
43722
子程序返回指令是()
43723
在MCS-51中,PC和DPTR都可作为指针,PC是为访问()存储器提供地址。
43724
不属于汇编伪指令的是()
43725
如下程序段:()MOV R0,#30H()SETB C()CLR A()ADDC A,#00H()MOV @R0,A()执行结果是()
43726
执行如下三条指令后,30H单元的内容是()MOV R1,#30H()MOV 40H,#0EH()MOV @R1,40H
43727
已知:R0=28H(28H)=46H()MOV A,;32H()MOV A,45H()MOV A,@R0 执行结果A的内容为()
43728
ORG 2000HDB 12H,46H,7BH,10H,15汇编后(2004H)=()
43729
表达赋值命令的是()
43730
下列哪条指令在汇编时没有相应的机器代码产生()
43731
MOVX a,@R0指令中源操作数的寻址方式是()
43732
下列指令中,源操作数属于立即寻址方式的是()
43733
当需要从MCS-51程序存储器取数据时,可采用的指令为()
43734
下列指令中,源操作数属于寄存器间接寻址方式的是()
43735
下列()指令正确
43736
下列程序段的功能是什么?()PUSH A()PUSH B()POP A()POP B
43737
假定累加器A中的内容为30H,执行指令:()1000H:MOVC A,@A+PC后,把程序存储器()单元的内容送入累加器A中
43738
访问SFR,可使用()种寻址方式?
43739
寄存器中存放操作数地址的是()种寻址方式
43740
对有关PC和DPTR的说法错误的是()
43741
MCS-51中,用户不能直接访问的寄存器是()
43742
MCS-51中既可位寻址又可字节寻址的RAM单元地址是()
43743
在MCU中,通常将一些中间计算结果放在()中
43744
P1口作普通输入口之前必须()
43745
堆栈数据的进出原则是()
43746
P0口发出地址时,伴随着()引脚上有信号输出
43747
MCS-51内部PC的值是()
43748
使用8031单片机时,需将EA引脚接()电平,因为其片内无()存储器
43749
MCS-51单片机复位后,R4所对应的存储单元的地址为()
43750
内部RAM中,位地址为30H的位,该位所在字节的字节地址为()
43751
微控制器又可被称为()
43752
8051与8751的区别是()
43753
Fill in the blanks with the proper form of the bracketed word.The research is questionable as it was only based on a handful of samples and they even showed widely () results lacking reliable consistency and accuracy.(fluctuate)
43754
Fill in the blanks with the proper form of the bracketed word.He's always cautious about giving his address to strangers, especially in places where gun control policies have not been enforced or ()。(implement)
43755
Fill in the blanks with the help of the first letter(s).The environmental organizations have managed to ma() their arguments with good accurate evidence and this has begun to make public opinion in their favor.
43756
Fill in the blanks with the help of the first letter(s).You have to learn to de() tasks and responsibilities and some of your power to your team members so that you can have more time to do other important things.
43757
Fill in the blanks with the help of the first letter(s).One ve() political activist complained that many women had not been taught the basics of political participation, in spite of the noisy claim for gender equality.
43758
The goal of the university is to make higher education available to everyone who is willing and capable () his financial conditions.
43759
These areas rely on agriculture almost (), having few mineral resources and a minimum of industrial development.
43760
It is through learning and accumulated experience that the individual () many appropriate ways of reacting to different situations.
43761
Stella held her ground against several attempts to () her as secretary of the club, insisting that no one could have done the job better than her.
43762
It was a shock to me that the chairman of the board should () me to dismiss the good employees the firm can no longer afford to employ.
43763
When I () my senses after the earthquake, I found myself wrapped up in bed in a little room, with my colleagues and family bending over me.
43764
Ricky's embarrassment when he met his teachers was (); his ears turned bright red and he kept looking down on the ground.
43765
I never trusted him because I always thought of him as such a () character, which had a hidden intension in whatever he did or said.
43766
Jack doesn't know what to () after the university as he just cannot make up his mind; besides jobs are rare in the economic recession.
43767
There are often bitter quarrels between the two, but the husband and wife can always () each other's demands to live together with ardent love.
43768
Directions: Fill in the blank in the following sentence with an exact word from the text.General Xiang Yu was a veteran leader who achieved the () of success.
43769
Directions: Fill in the blank in the following sentence with an exact word from the text.General Xiang Yu was a veteran leader who was () respected by his many conquests.
43770
Directions: Fill in the blank in the following sentence with an exact word from the text.General Xiang Yu was a () exception to the norm.
43771
Directions: Fill in the blank in the following sentence with an exact word from the text.But the genius of General Xiang Yu's () would be validated both on the battlefield and in modern social science research.
43772
Directions: Fill in the blank in the following sentence with an exact word from the text.They watched their () go up in flames.
43773
Directions: Fill in the blank in the following sentence with an exact word from the text.But it wasn't really () by many of his loyal soldiers.
43774
Directions: Fill in the blank in the following sentence with an exact word from the text.What he said was surely ()。
43775
Directions: Fill in the blank in the following sentence with an exact word from the text.He explained that he was () on them a necessity for attaining victory over their opponents.
43776
Directions: Fill in the blank in the following sentence with an exact word from the text.To his troops' astonishment, he ordered their cooking pots () and their sailing ships burned.
43777
Directions: Fill in the blank in the following sentence with an exact word from the text.Xiang Yu was a Chinese Imperial general in the third century B.C.who took his troops across the Zhang River on a () into enemy territory.
43778
In the text, Dr.Ariely suggests that people should prohibit overbooking, drop options, assign tasks to others, and even shift ideas to others to pursue.
43779
The corresponding costs are often less obvious in the experiment than in life.
43780
The significance of the experiment done at MIT is that the experiment enabled people to see why it’s always so hard for them to say “No” to any opportunities that came to them.
43781
The purpose for the experiment is to investigate some reasonable human behavior when making a decision, such as the tendency for keeping multiple choices open.
43782
When crossing the Zhang River, General Xiang Yu ordered his troops to crush their cooking pots and burning their sailing ships because he saw no hope of achieving victory over their opponents.
43783
Which sentence best paraphrases this one by Lin Yutang, the Chinese writer: Besides the noble art of getting things done, there is the noble art of leaving things undone?
43784
Why are the corresponding costs often less obvious in life than in the experiments?(Paras.8-9)
43785
()According to Dr.Ariely’s book, Predictably Irrational, what might be a weakness of human beings?(Para.4)
43786
In what way is General Xiang Yu’s order similar to Dr.Ariely’s experiments?
43787
()The text starts with a question about what Xiang Yu, a Chinese imperial general, would do when facing ()。(Para.1)
43788
According to the professor, if you are invested () common-sense ideas, you will have necessary skills for a lifetime employment.(填介词)
43789
Grasses and flowers in a desert survive from one year to the next by existing through the long, hot, and dry season () the form of seeds.(填介词)
43790
This is not good reporting, which should involve all of the key facts and an account of those facts () an objective manner.(填介词)
43791
The Chinese People Congress has voted in favor () the Three Gorges Dam on the Yangtze River, the biggest hydroelectric project in the world.(填介词)
43792
It is the child's first taste of living away from home, in the place where he must stand on his own two feet, and where he must stand up () himself.(填介词)
43793
Offenders will be () a seven-year prison term.
43794
They stood () what they believed to be right.
43795
The () of war and the death of millions of young people shook the foundations of Western idealism.
43796
There was a () sunrise yesterday.
43797
He was a man with considerable ()。
43798
I () him to give up the plan.
43799
Adams took a () of jobs which have stood him in good stead.
43800
From this you can () the total mass in the Galaxy.
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