Test 10 Questions ppl-h-en, no time limit

1 - A true altitude is...
2 - Which of the following messages has the highest priority?
3 - The hydraulic pump of the control system is driven by the...
4 - What information is broadcasted on a VOLMET frequency?
5 - Wake turbulence is caused by...
6 - Regarding the communication model, how can the use of the same code during radio communication be ensured?
7 - What is the correct way of acknowledging the instruction "DZF after lift-off climb straight ahead until 2500 feet before turning right heading 220 degrees, wind 090 degrees, 5 knots, runway 12, cleared for take-off"?
8 - When do you expect wind shear?
9 - Which of the stated surfaces will reduce the wind speed most due to ground friction?
10 - Which of the following is NOT a risk factor for hypoxia?