在质量体系要素中，管理职责要素的内容包括（）。
A．质量方针
B．合同评定
C．管理承诺
D．以顾客为中心
E．过程控制
参考答案：A, C, E
He is as _____ as his father this year. [ ]
A. strong
B. stronger
C. strongest
D. the strongest
____ either you or she going to the United States? [ ]
A. Is
B. Are
C. Have
D. Does
