216. What is the MOST important thing you should do before transmitting on a marine radio ?____
举一反三
- What do you think is the most important thing on board?
- The most important thing we should do is the first thing I have said.
- What is the most important thing to do when meeting someone new?
- 中国大学MOOC: The most important thing your impromptu speech should do is:
- 中国大学MOOC: What is the most important thing for dog trainers to do?