Answer:
Class 3B
Explanation:
The Class 3B laser products are well thought-out to be more harmful and relatively dangerous under straight and spectacular reflective viewing conditions. A Class 3B laser product, however, is on the whole not a fire hazard, diffuse reflection hazard or a laser generated air contaminant (LGAC) production hazard but could be hazardous when under mirror light reflection.
Productive resources are limited. Therefore people cannot have all the goods and services they want. As a result, they must choose some things and give up others. Like individuals, governments and societies experience scarcity because human wants exceed what can be made from all available resources.
A mixed-factorial design describes a study with:
an experimental variable and a subject variable.
more than 2 independent variables.
a between-subjects variable and a within-subjects variable.
a manipulated variable and a within-subjects variable.
a between-subjects variable and a within-subjects variable.