IDC业务产品优点是()。
A.专业主机托管
B.虚拟主机租用
C.网络接入服务
D.专业运维
E.安全、按需求配置资源
参考答案:A, B, C, D, E
—What's the reason ______he didn't go to school last week?
—The reason was______ he was ill. [ ]
A. why; that
B. that; because
C. that; that
D. for; what
食品生产经营者应当依照()从事生产经营活动,对社会和公众负责,保证食品安全,接受社会监督,承担社会责任。
A、法律
B、法规
C、产品订单和合同要求
D、食品安全标准