皮皮学，免费搜题
登录
搜题
【多选题】
证明核酸是遗传物质的经典试验有.A.
肺炎键球菌的转化试验
B.
病毒的拆开与重建试验
C.
涂布试验
D.
噬菌体感染试验
E.
波动试验
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】___ does not belong to the output devices .
A.
facsimile machine
B.
headset
C.
speaker
D.
microphone
【多选题】Which are the output devices of computer?
A.
monitor
B.
printer
C.
optical disk
D.
mouse
【多选题】Which of the following are output devices?
A.
Keyboard
B.
Digital camera
C.
Printer
D.
Monitor
【单选题】which could be used both in output module and as output devices?
A.
Triac
B.
Relay
C.
Motor
D.
Transistor
【简答题】Many devices combine input and output devices.
【简答题】The hardware consists of and output devices, CPU and storage devices.
【简答题】Input devices / Output devices (输入设备/输出设备) --- connect the PLC to ________ and _________. --- they may be _______ a PLC or PLC may have _______ I/O modules.
【单选题】Typical output devices of a microcontrollerinclude ( ), LEDs, and LCD displays.
A.
relays
B.
sensors
C.
keyboard
D.
radio frequency devices
相关题目：