要搞清楚这个问题，首先要弄清楚stamp 的用法：

第一个问题：

stamp用作及物动词时，其中一个意思是“标注着；表示出”，后面可以接“复合宾语”。其中，宾补的形式可以是：

1. stamp + 宾语 + to be

2. stamp + 宾语 + as + 名词/形容词/过去分词

3. stamp + 宾语 + n.

4. stamp + 宾语 + adj.

网友的句子是被动语态：

each page of the scripts had been stamped by the military and civilian censors as passed for broadcast.

（在被动语态中，as passed for broadcast 是主语补足语从句）

我们变成主动语态：

the military and civilian censors had stamped each page of the scripts as passed for broadcast.

（在被动语态中，as passed for broadcast 是宾语补足语从句）

第二个问题：

as 是连词，as passed for broadcast 是在as 之后省略了each page of the scripts was：

as each page of the scripts was passed for broadcast

这种省略，在as 从句中是很常见的，例如：

as planned 正如计划的那样

as expected 正如预料的那样

as imagined 正如想象的那样

as arranged 正如计划的那样

as seen from above 正如从上述看的那样

as told before 正如前述

as shown above 正如上面显示的那样

as said 正如说过的（那样）

as mentioned 正如提到的（那样）

as described 正如描述的（那样）

as discussed 正如讨论过的（那样）

as noted 正如叙述到的（那样）

as stated 正如说指出的（那样）

as announced 正如宣布的（那样）

as pointed out 正如已经指出的（那样）

as indicated 如前所示（那样）

as hinted 正如已经暗示的（那样）

as told 正如已经告知的（那样）

as already shown 如已显示（那样）

as emphasized 正如已经强调的（那样）

as observed 正如已观察到的（那样）

as explained 正如已经解释过的（那样）

as suggested 正如已经提出的（那样）

下面，再举几个其他类型as 作宾补的例句：

All these qualities stamp him as perfect.

所有的这些品质，都标志着他是个完美的。

His ingenuity with words stamped his as an outstanding politician.

他那足智多谋的话语说明他是一位杰出的政治家。