【单选题】Design of all the new tools and implements is based on careful experiments with electronic instruments. First, a human “guinea pig” is tested using a regular tool. Measurements are taken of the amount...
【判断题】What Dr. Beaumont found out from Alexis's stomach was that the food in the stomach made the muscles contract and the juices pour out, causing the food itself to start up the changes which result in it...
【单选题】The roots of the brachial plexus are found in the ( ) between the anterior and middle scalene muscles at the level of the cricoid cartilage (C6) in the neck.