As far as I know, all the subtest are done with pictures.
There is no need to know the Dutch (or any particular language) at all.
There are even instructions on how to administer the test without verbal directions.
Another thing that is different from other tests is that the tester gives feedback and she says if the tester makes a mistake - but not why, to allow for self correction.
I think this maybe a double-edge sword with DD because at home if I tell her she did a mistake she looses interest in the activity and pretends she cannot do it.