在微机系统中,麦克风属于
A.输入设备
B.输出设备
C.放大设备
D.播放设备
参考答案:A
解析: 输入设备是用来向计算机输入命令、程序、数据、文本、图形、图像、音频和视频等信息的。
已知一次函数f(x)是奇函数,且过点P(1,2),则f(x)的解析式为 [ ]
A.f(x)=x
B.f(x)=2x
C.f(x)=x+1
D.f(x)=3x-1
根据句意,写出画线词的对应词或反义词。
1. His first name is John, and his ________ name is Brown.
2. ________ your pictures here. Take the books there.
3. Linda is my ________, and Clark is my uncle.
4. Ask and ________ these questions.
5. The parents have a son and a ________.