If you're Rh negative and your baby is Rh positive, however, your body might produce proteins called Rh antibodies after exposure to the baby's red blood cells. The antibodies produced aren't a problem during the first pregnancy.he Rh factor test is done during pregnancy to identify a woman's Rh factor. In some cases, the baby's father might need an Rh factor test, too. During pregnancy, problems can occur if you're Rh negative and the baby you're carrying is Rh positive.
Torque converter, opened, interior similar to a retarder. A retarder is a device used to augment or replace some of the functions of primary friction-based braking systems, usually on heavy vehicles. Retarders serve to slow vehicles, or maintain a steady speed while traveling down a hill, and help prevent the vehicle from running away by accelerating down the hill.
The terms âengine brakeâ and âengine retarderâ refer to a (usually noisy) device in a diesel engine that increases itâs engine braking power, NOT the natural braking that you get by lifting your right foot. An engine retarder is one thing (which is what they generally mean when they say âno engine brakingâ). However âengine brakingâ is using the engine to slow the carâ¦ in the strictest sense of the term. Without being specific, the law can, technically, refer to any form of engine braking.