非物理围网,是指海关针对经营企业的不同情况分别以()和()作为海关监管手段的管理模式。
参考答案:电子化手册电子账册
_____ is known to all, China will be an ______ and powerful country in 20 or 30 years' time. [ ]
A. That; advancing
B. This; advanced
C. As; advanced
D. It; advanced
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