【单选题】import time scale = 10 print("------执行开始------") for i in range(scale+1): a = '*' * i b = '.' * (scale - i) c = (i/scale)*100 print("{:^3.0f}%[{}->{}]".format(c,a,b)) time.sleep(0.1) print("------执行结束...
【判断题】import threadingimport timelock=threading._RLock()words=["a","b","d","b","p","m","e","f","b"]def increase(): global words for count in range(5): lock.acquire() print("A acquired") for i in ...
【简答题】Under CMR convention, the carrier is responsible for loss of or damage to the goods occurring between the time he takes over the goods and the time of delivery as well as for any delay in delivery. ( ...