单选题,正确答案是100分,非正确答案为0分,Good Luck!
Q1:If you take an x-ray of a cat chest at 200 milliamperes for 1/10th of a second, how millliampere-seconds is the exposure?如果你为一只猫拍摄胸腔X光片使用的是200毫安1/10秒,那么你的参数是多少毫安秒?