二进制数中右起第10位L的l相当于2的次方数为（）。
A.8
B.9
C.10
D.11
参考答案：B
解析：二进制数中第n位的权系数为2n-1
Mrs Smith lives in our building. She is really a good because she is always ready to help people around her.
A．visitor
B．waiter
C．neighbour
D．artist
总体设计分为哪两个阶段？
