A straight line conecting the leading edge with the trailing edge of an aerofoil.

The assessor was trying to get to the approach where you need flaps and slats to increase S (lower wingload) in order to be able to fly a lower speed.

Flying at Vmd. At this speed the aircraft is flying at the maximum ratio of Lift and Drag, maximizing the potential energy consumption in terms of distance travelled.

Advection fog occurs when moist air passes over a cool surface by advection (wind) and is cooled.

It is common as a warm front passes over an area with significant snowpack, but it is most common at sea when tropical air encounters cooler waters, including areas of cold water upwelling, such as along the coast of California.

Stall speed is defined as the minimum steady flight speed at which the airplane is controllable.

A precision approach uses both lateral (from left to right) and vertical guidance. A non-precision approach only uses lateral guidance.

Because usually the heated air bypasses the air filter, therefore it is possible for dust to enter the engine and so exposing the engine to unnecessary engine wear.

NDB’s are stations emitting a signal. There is nothing for them to be accurate about. ADF's on the other hand, when tuned to an NDB need to be accurate within +/- 5 degrees.

Occluded fronts are formed during the process of cyclogenesis when a cold front overtakes a warm front. When this occurs, the warm air is separated (occluded) from the cyclone center at the Earth's surface.

Occluded fronts usually form around mature low pressure areas.

Yes, some directional control as we still have two functioning engines.