单项选择题
A.1 2 3 4 ((M*M)*M)*M B.1 2 3 4 (M*M)*(M *M ) C.1 2 3 4 (M*(M *M))*M D.1 2 3 4 M*(M *(M *M ))
A.10 B.9 C.8 D.7
A.62, 88, 95 B.62, 95 C.55, 88, 95 D.55, 95