A bar code reader is an input ______ to read the information of bar codes.
A: device
B: term
C: simulation
D: process
A: device
B: term
C: simulation
D: process
举一反三
- 中国大学MOOC: A bar code reader is an input ______ to read the information of bar codes.
- 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
- Bar Code指的是商品上的条形码。
- （2）、$A,B,C$至少两个发生 A: ${(ABC)}\cup{(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$ B: ${(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$ C: ${A}\cup{B}\cup{C}$ D: ${(\bar{A}\bar{B}\bar{C})}\cup{(\bar{A}B\bar{C})}\cup{(\bar{A}\bar{B}C)}\cup{(A\bar{B}\bar{C})}$
- 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；}}