The situation was ______ for a breakthrough that night.

A:favourable B:favourite C:preferable D:applicable

To handle the delicate situation, you must be ______.

A:more careful B:more carefully C:carefully enough D:enough carefully

He is not （） to understand the situation.

A:so quick B:quick enough C:enough quick D:as quick as

In the unlikely event that a distress situation allows you to send only a very short message,after MAYDAY would you first say______?

A:Your name and callsign B:Your position C:The number of persons on board D:the nature of the distress situation

"Extremis situation means________．

A:lose quarters B:immediate danger situation C:very danger situation D:the situation that you shall call the master"

"Head-on situation is mostly expected on ______．

A:single tracks B:one-way routes C:two-way routes D:recommended routes"