Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or （）.

Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and （）. A: fluid friction B: fluid turbulence C: component misalignment D: pressure surge

Why does the pixel-based approach lead to the error recognition of focusing pixels? A: focus measures are susceptible to noise B: the depth of field C: image misalignment D: The effect of defocus pixels