What should computer users do if they work at their machines for several hours a day?
A)use an ergonomic chair
B)change the resolution of the computers
C)change the orientation of the computer
D)use artificial tears

Question

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The Answer of What should computer users do if they work at their machines for several hours a day?
A)use an ergonomic chair
B)change the resolution of the computers
C)change the orientation of the computer
D)use artificial tears

What Should Computer Users Do If They Work at Their