The following text is for number 19 and 20.

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DANGER
HIGH VOLTAGE
DON'T OPEN
19. Why we can't open the cover?
To avoid the high voltage.
To prevent electric shock.
CO To keep it in danger.
d. To danger the user.
20. The word "danger" has opposite meaning as
hazardous
harmful
b. sale
d good
Dead oricare borgo​

The following text is for number 19 and 20.

Jawaban:

19) B. to prevent electric shock

20) D. good

Semoga membantu!