数据的多个位数据被同时传送的通讯方式称为（）
A.串行通讯
B.并行通讯
C.同步通讯
D.异步通讯
参考答案：B
密度分辨力又称为
A．密度函数 B．密度响应曲线C．低对比度分辨力 D．高对比度分辨力E．密度可见度
Directions:
Write an essay of 160--200 words based on the following picture. In your essay, you should
1) describe the cartoon briefly,
2) interpret its intended meaning, and
3) give your view on the issue.
You should write it neatly on ANSWER SHEET 2.
