The most convenient way to work with multiple camera raw images is to use the Filmstrip view in Camera Raw, which opens by default when you open multiple images in Camera Raw from Bridge.
Images can have three states in Filmstrip view: deselected, selected (but not active), and active (also selected). In general, adjustments are applied to all selected images.
You can also synchronize settings to apply settings from the active image to all selected images. You can quickly apply a set of adjustments to an entire set of images—such as all shots taken under the same conditions—and then do fine-tuning on the individual shots later, after you’ve determined which you’ll use for your final output.