皮皮学，免费搜题
登录
搜题
【简答题】
西门子S7-200系列PLC的CPU型号,除了课堂中介绍的CPU226以外,还有哪些,并列出它们的性能参数?
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】_____he gave that we should take more exercise in our spare time!
A.
What a good advice
B.
How a good advice
C.
What good advice
D.
How good advice
【单选题】We should spare no effort to_____ our environment.
A.
beauty
B.
beautify
C.
beautiful
D.
beautifully
【单选题】_____, we should not leave the lab although it might occupy a bit of our spare-time.
A.
Not to finish our work
B.
We having not finished our work
C.
Our work not being finished
D.
We without finishing our work
【单选题】The author proposes that we should______.
A.
spare no efforts to increase life expectancy
B.
be aware of the rapid graying of our society
C.
apply science and technology in everyday life
D.
try our best to improve the lives of old people
【单选题】Our money is limited, so I think that we should _______ for the next year.
A.
save
B.
spare
C.
benefit
D.
budget
【单选题】Forests can provide beauty and prevent ______ . Therefore, we should spare no efforts to protect forests.
A.
erosion
B.
corruption
C.
decay
D.
spoil
【简答题】We should spare no effort to (beauty)_______our environment.
相关题目：