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【单选题】
Highwoods Book City New Chain Store Opening Highwoods Book City is proud to announce the opening of a new chain store on Sunday, February. 16th at 307 River Road, just opposite the KFC. The new chain store will offer you various books, ranging from classic books to modern ones, from prose to novels, from comic books to scientific ones. It also provides medical books for elderly people, cooking materials for housewives, fashion magazines for young ladies, and knowledge-based books for students. To mark this special occasion, we offer a special open of discount to our customers. Just fill in the following coupon and bring it to us between February 16th to March 16th, and you will enjoy a 20% discount on any book you purchase. What is the purpose of this advertisement?
A.
To introduce the history of the book store
B.
To memorize a city called Highwoods Book
C.
To attract more customers for purchasing books
D.
To announce the new address of the Book City
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举一反三
【单选题】当P1口的P1M1和P1M0分别设置为0xff、0x0时,P1口设置为()
A.
准双向口
B.
推挽输出
C.
仅为输入(高阻)
D.
开漏
【判断题】市场营销是指个人或群体通过创造、提供并同他人交换有价值的产品,以满足各自的需要和欲望的一种社会活动和管理过程。
A.
正确
B.
错误
【单选题】( )表示直线插补的指令
A.
G9
B.
G111
C.
G01
D.
G93
【单选题】菲力普 · 科特勒指出:市场营销是个人或 ( ) 通过创造并同他人 交换 产品和价值以满足需求和欲望的一种社会和管理过程。
A.
机构
B.
企业
C.
群体
D.
组织
【多选题】S7-200 系列PLC 支持的通信协议有( ).
A.
PPI
B.
MPI
C.
PROFIBL S-DP
D.
IFEE802.1
【多选题】S7-200系列PLC支持的通信协议有
A.
PPI
B.
MPI
C.
PROFIBUS—DP
D.
IEEE802.1
E.
CAN
【单选题】()表示直线插补的指令。
A.
G90
B.
G00
C.
G01
D.
G91
【单选题】()表示直线插补的指令。
A.
G50
B.
G01
C.
G66
D.
G62
【多选题】S7-200 系列PLC 中定时器有哪些种类( ).
A.
S_ODT
B.
TON
C.
S_OFFDT
D.
TOR
E.
TONR
【多选题】S7-200系列PLC指令系统有下面哪几种
A.
梯形图
B.
语句表
C.
功能块
D.
C语言
E.
汇编语言
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