单选题
3331. Identify revisions, additions and deletions by a vertical black line along the outside of the page opposite only that portion of the printed matter that was changed
A
In order to revise, supplement an delete the printed maternal, a perpendicular black line must be use to identify the changed portion along the margin of the page
B
Whenever the printed matter is to be revised, replenished or updated mark a black cross on the right margin of the page opposite to the changed portion.
C
A vertical black line should be drawn to make any revision, addition and deletion along the outside of the page opposite to the changed ciontents.
答案解析
正确答案:C
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