What dishes to ask for at Chinese restaurants in America?

What are the most important words/phrases for a medical emergency? Pinyin and characters plz? I think I should learn the questions I would need to say if I found a person sick on the ground: "Do you have diabetes?" "Do you have asthma?" or the words for stroke and heart attack. I can just imagine someday here in USA, a Chinese man becoming sick and he doesn't speak English and if only I knew the write words I could tell the doctor what was wrong.

What are the most important phrases to lean in Chinese? I am already good at the basics, and am slowly learning new verbs, but I feel that there must be some phrases I should be learning 您需要急救吗？I put this sentence together. Can you understand it? It is supposed to mean "Do you need first aid?" 厕所在哪里？(Very important!) I'm also trying to learn the words to give and receive directions. Are there any you can help me think of?Thank you all. :)

In "nǐ zài nǎ lǐ gōng zuò?" and "nǐ zhù zài nǎ lǐ?" why is the "nǎ lǐ" before "gōng zuò" but after "zhù zài" ? Is this a rule? Is it important? What determines whether "nǎ lǐ" is before or after the verb?Thanks for all the quick answers! They all helped me, so I'm not going to choose a "Best Answer". :)