Inclined manometers are typically used for measuring small differences in pressure, especially when a more sensitive measurement is require(D) The inclination enhances the sensitivity by spreading the pressure difference along a longer length of fluid column.
Conclusion: Inclined manometers are ideal for measuring small pressure differences due to their increased sensitivity.
The motion of an airplane is represented by the velocity-time graph as shown below. The distance covered by the airplane in the first 30.5 seconds is km.

If A + B means A is the mother of B; A - B means A is the brother of B; A % B means A is the father of B, and A \(\times\) B means A is the sister of B, which of the following shows that P is the maternal uncle of Q?