皮皮学，免费搜题
登录
搜题
【判断题】
PLC的输入继电器只能由外部信号驱动 。A.
正确
B.
错误
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
【简答题】One day an old woman was traveling alone in the mountains. Suddenly she saw something shining（发光） in the stream. When she came close, she found it was a precious（宝贵） stone. She put the stone into her ...
【单选题】She suddenly saw him standing in the crowed, his eyes______ her like they had in school.
A.
stared at
B.
staring at
C.
being stared at
D.
to stare at
【简答题】阅读理解。 One day an old woman was traveling alone in the mountains. Suddenly she saw something shining in the stream. When she came close, she found it was a precious stone. She put the stone into her ba...
【单选题】Human facial expressions differ from those of animals in the degree they can be controlled on purpose. [ ]
A.
with which
B.
to which
C.
of which
D.
for which
【简答题】A young woman was driving through the lonely countryside. It was dark and rainy. Suddenly she saw an old woman by the side of the road, holding up her hand as if she wanted a lift(搭便车). 'I can't leave...
【简答题】A young woman was driving through the lonely countryside. It was dark and raining. Suddenly she saw an old woman by the side of the road, holding her hand out as if she wanted a lift. “I can't leave ...
【简答题】A young woman was driving through the lonely countryside. It was dark and raining. Suddenly she saw an old woman by the side of the road, holding her hand out as if she wanted a lift. “I can’t leave h...
【简答题】One day an old woman was traveling alone in the mountains. Suddenly she saw something shining in the stream. When she came close, she found it was a precious stone. She put the stone into her bag and ...
相关题目：