|
Be free of scratches.
|
|
|
Allow clear views to both sides.
|
|
|
Be airtight.
|
|
|
Fasten securely.
|
2/40.
1.
To be effective, a face shield should not:
Answer correctly : 0 | Wrong : 0
Answer Sheet :
Refresh
Refresh this page and redo the question
Restart
Restart this set of tests