The outlet at a fire hydrant may be positioned anywhere from horizontal to pointing（）.<br>A:45°upward<br>B:vertically upward<br>C:vertically downward<br>D:all of the above

The outlet at a fire hydrant may be positioned anywhere from horizontal to pointing（）.
A:45°upward
B:vertically upward
C:vertically downward
D:all of the above

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