中国大学MOOC: A bar code reader is an input ______ to read the information of bar codes.

Bar Code指的是商品上的条形码。

A bar code reader is an input ______ to read the information of bar codes. A: device B: term C: simulation D: process

“信用卡”的英文是： A: credit card B: discount C: bar code D: calculator

POS系统建立在（）技术基础上。 A: EDI B: BTS C: CRM D: Bar Code

( ) is with the advantages of easy to prepare, simple, clear and intuitive. A: single code network planning B: double code network planning C: time scale network planning D: bar chart plan

The commonly used method of schedule preparation include ( ) A: bar chart B: flow chart C: single code network planning D: double code network planning E: horizontal line graph

Which code， inserted at line 15， allows the class Sprite to compile？（） A: Foo{public int bar（）{return 1；}} B: new Foo{public int bar（）{return 1；}} C: new Foo（）{public int bar（）{return 1；}} D: new class Foo{public int bar（）{return 1；}}

Which of the following is not a type of scanning device? A: Optical scanner B: Bar code reader C: Stylus D: Character and mark recognition

条码(bar code)是由一组规则排列的条、空及其________组成的标记，用于表示一定的信息。