When you doubt the existence of risk of collision, ________.
举一反三
- In with situation do you think a risk of collision exists.
- In which situation do you think a risk of collision exists?
- Risk of collision may exist ______.
- There is no doubt you will pass the exam this time. A: when B: what C: that D: whom
- 165. In determining if risk of collision exists the following considerations shall be among ______