在选择供应商时，应该以商品的单一价格作为评判标准。
正确
错误

For this part, you are allowed 30 minutes to write a co...

未知题型For this part, you are allowed 30 minutes to write a com position on the topic The Aging Problem In ChinA.You should write at least 120 words following the outline given below in Chinese:
1．人口老龄化问题正困扰着中国。
2．人口老龄化带来的问题。
3．应采取怎样的措施，谈谈自己的观点。
The Aging Problem In China

购买LCD显示器通常会考虑显示器的响应时间、对比度、亮度。响应时间是以（  ）为单位，指的是液晶显示器对输入信...

单项选择题购买LCD显示器通常会考虑显示器的响应时间、对比度、亮度。响应时间是以（  ）为单位，指的是液晶显示器对输入信号的反应速度。
A、m/s  
B、μs  
C、ms  
D、μ/s

The physical components of a computer, the processor, t...

未知题型The physical components of a computer, the processor, the memory, input device, and output device are its hardwarE.You can see them, touch them, and feel them. Programs and data are different, existing only as electronic pulses stored in memory. Software is a general term for programs.