皮皮学，免费搜题
登录
搜题
【单选题】
关于鼠标和显示器的描述,正确的是______。A.
鼠标比显示器更早应用于计算机
B.
鼠标是输入设备，显示器是输出设备
C.
鼠标与显示器一样，都是输出设备
D.
鼠标价格比显示器要高
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】I'm doing my homework. Could you please _____ the TV a little? [ ]
A.
turn up
B.
turns up
C.
turn down
D.
turns down
【单选题】Will you __ the light? It's dark in the room. I can't see clearly. [ ]
A.
turn on
B.
turn of
C.
turn down
D.
turn up
【单选题】有两台PID调节器R1和R2,其参数整定为PB1Ti2,Tdl>Td2,这表示______。
A.
R1的比例作用比R2强,R1的积分和微分作用比R2弱
B.
R1的比例作用比K2弱,R1的积分和微分作用比R2强
C.
R1的比例、微分作用比R2强,积分作用比R2弱
D.
R1的比例、微分作用比R2弱,积分作用比R2强
【单选题】Finally, save your document before you ________ your computer.
A.
turn on
B.
turn up
C.
turn off
D.
turn down
【单选题】I'm reading now. Please tell him the TV a bit. [ ]
A.
turn up
B.
turn off
C.
to turn down
D.
turn down
【单选题】We invited her to dinner but she didn’t even bother to _______.
A.
turn in
B.
turn up
C.
turn on
D.
turn down
【单选题】__________ the radio, please. I want to listen to the weather report. [ ]
A.
Turn on
B.
Turn off
C.
Turn down
D.
Turn up
相关题目：
参考解析：
知识点：
题目纠错 0
发布
