You Do Need power plug adapter while traveling from Denmark to Gaza Strip.

Here is Why You Need An Adapter

The outlet and plug type used in Gaza Strip are C and H and in Denmark are C, E, F and K. This is how they look like.

Denmark

In Denmark, outlets of type C, E, F and K are in use.

Type C

Type E

Type F

Type K

Gaza Strip

In Gaza Strip, outlets of type C and H are in use.

Type C

Type H