Test 10 Questions SPL - Sailplane Pilot License - Communication, no time limit

1 - In what cases is visibility transmitted in kilometers?
2 - Which information from a ground station does not require readback?
3 - Distress messages are messages...
4 - What kind of information should be included in an urgency message?
5 - Which altitude is displayed on the altimeter when set to a specific QFE?
6 - In what situation is it appropriate to set the transponder code 7600?
7 - What is the correct way of establishing radio communication between D-EAZF and Dusseldorf Tower?
8 - What is the correct way of acknowledging the instruction "Squawk 4321, Call Bremen Radar on 131.325"?
9 - What is the correct way of acknowledging "You are now entering airspace Delta"?
10 - What is the meaning of the phrase "Correction"?