此程序是针对LM75的I2C 操作平台（主方式的软件平台）的底层的C 子程序,如发送数据 及接收数据,应答位发送,并提供了几个直接面对器件的操作函数。-This procedure is for the LM75 I2C operation platform (Master software platform) of the bottom of the C subroutine, such as transmit data and receive data acknowledge bit i