Searched and Found: Are There Languages That Don't Use Question Marks (or Equivalents)?

I've noticed that there are many memes and posts around the web lately that forgo the use of a question mark at the end of a query.

I wondered if there were languages that don't use any or any equivalents; I found this. It only semi-answers my question, but is interesting nonetheless:

http://www.wintranslation.com/dtp-punctuation/