| 摘要 |
A warning sign comprises first and second parts pivotably interconnected at their in use upper ends and pivotable between a first storage position in which the first and second parts are arranged in side-by-side relationship and a second operative position in which the first and second parts are at an angle to one another. Detents are also provided for releasably retaining the first and second parts in the second operative position, and a third part is provided which can be releasably supported by the detent.
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