【单选题】Despite a very strong wind, a tennis player manages to hit a tennis ball with her racquet so that the ball passes over the net and lands in her opponent’s court. Consider the following forces: A. a do...
【单选题】若设串行控制寄存器 SCON=40H,则串行口的工作方式为()
【多选题】采用RS232C实现最简单的双机互联,至少需要如下信号线 、 和GND
【简答题】采用RS232C实现最简单的双机互联,至少需要如下信号线: 、RXD和GND。
【单选题】In "Sun", despite the warning, the children keep going back to sunbathe in the same place every day. What does this mean?
A.
They are naughty and childish.
B.
It shows their respect for natural emotions which are symbolized by the snake.
C.
They are ignorant without realizing the danger.
【简答题】采用 RS232C 实现最简单的双机互联,至少需要如下信号线: 、 和 。
【单选题】51单片机串行口的工作方式由串行口控制寄存器SCON中的SM0和SM1设定,当SM0、SM1为1、0时,则串行口设定为方式( )。
【单选题】手术室护士小姜,使用环氧乙烷消毒物品,工作中突然感到剧烈头痛、恶心、四肢无力'被送往急诊室,经诊断并排除其他疾病,确诊为环氧乙烷急性中毒。导致该职业损伤的因素是
【简答题】编写一个程序,从键盘上输入 4 个整数,输出其中的最小值。