【单选题】You are in the emergency room when a patient is brought in, the loser in a street fight. He has received a stab wound about 1.5 cm long in the right side of the chest about 1.5 cm below and 1 cm media...
【单选题】When the circular-section low-carbon steel specimen is tensed until rupture, the gauge distance is changed from 100mm to 130mm, and the diameter is changed from 10mm to 7mm, then the Poisson rat io is...