为实现标记转换而设置的处理指令也 可以删除；但 必须保留所有其他的处理指令。

Processing instructions intended for the tokeniser MAY be removed; all other processing instructions MUST be preserved.

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因此，如果要保留原始页面的表单数据和查询字符串集合，必须把目标页面page指令的EnableViewStateMac属性设置成False。

Therefore, when you choose to preserve the form and query string collection of the original page, you must set the EnableViewStateMac attribute of the page directive to False for the destination page.

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就生产资料市场来说，1978年以前，国家指令性计划分配的生产资料产品有791种，现在只保留5种，其余都进入市场。

Before 1978, there were 791 products belonging to means of production allocated according to state plans, but now only five of them remain, and the rest have entered the market.

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