特种设备出厂时，按有关安全技术规范的要求，应当负有哪些技术资料或文件？
参考答案：
设计文件、产品质量合格证明、安装及使用维修说明，监督检验证明等文件
Recently a debate about ___ is real beauty has been raised．People are pushed to think some questions like ___ is better, artificial beauty or natural one．
A．what．．．which
B．who．．．which
C．whatever．．．whoever
D．where．．．which
抗（抑）菌剂最小销售包装标签对指示菌的杀灭率大于等于多少时，可标注“有杀菌作用”。（）
A.90％
B.60％
C.80％
D.70％
