皮皮学，免费搜题
登录
搜题
【单选题】
下面关于可编程控制器（Programmable Logic Controller，简称 PLC）说法错误的是A.
PLC 也属于工业控制计算机的一种
B.
PLC 主要由中央处理单元、 存储器、 输入接口、输出接口、通信接口等部分组成
C.
PLC 主要使用梯形图编程，但编程方法比较复杂，一般电气技术人员较难掌握
D.
PLC 是微机技术和继电器常规控制概念相结合的产物，是一种以微处理器为核心的用于控制的特殊计算机
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】Jane , what a nice coat you are wearing today! - Thank you ! I ____ 480 yuan on it.
A.
cost
B.
took
C.
paid for
D.
spent
【单选题】— What's he wearing? — ___________________ [ ]
A.
He's wearing a green shirt.
B.
I am wearing a green shirt.
C.
She's wearing a green blouse.
【单选题】David has been away for more than 25 days.-I miss him very much.You know ,25 days _______short.
A.
isn't
B.
is
C.
are
D.
aren't
【单选题】— David has been away for more than 25 days . — I miss him very much . You know, 25 days short .
A.
is
B.
isn ’ t
C.
are
D.
aren ’ t
【单选题】--What a beautiful dress Jane is wearing！ --But it doesn't look good ____ her skin.
A.
on
B.
in
C.
against
D.
alongside
【单选题】— David has been away for more than 25 days. --I miss him very much.You know , 25 days ______ short.
A.
is
B.
isn’ t
C.
C are
D.
aren’ t
【单选题】What does the underlined sentence in the third pa ragraph mean?
A.
Jane’s life is very difficult．
B.
Jane continues to live as usual．
C.
Jane almost can’t control her lire
D.
Jane works very hard to live a happy life．
【单选题】Jane wanted to ______ some male attention by wearing hot dress in the club.
A.
attract
B.
attractive
C.
attempt
D.
audition
相关题目：