Q What is the approach speed
A Of this aircraft we use XX kts
Q No, of any aircraft
A Erm.... (scratch head), do you mean 1.3 VsO?
Q Yes, exactly (turns to another student), you see, the British know the answer so why dont you? (I was not in the UK at the time)
Q OK, then tell me why it is 1.3 VsO
A (Blank look)
Q What is climb speed
A Erm 70kts
Q For any AC
A (Blank look)
Q It is 1.2 VsO. You can thus raise the drag flaps in a go-around and still have speed protection to get best rate of climb.
An exam should still be part of the learning process. Examiners are also (or have been) instructors. A good examiner will let you walk away thinking "I know more now than I did before the start of that"
RIX
p.s. good luck