The content of the pressure pipeline experimental preparation work is () A, the fire hydrant in the test section is installed B, all the openings of the test pipe section should be closed, there must be no leakage of water C, and the pipe should be removed before the test

The content of the pressure pipeline experiment preparation work is ()

A. The fire hydrant in the test section is installed

B. All openings of the test pipe section should be closed and there shall be no leakage of water

C. Debris in the tube should be removed before the test

D. No gate valve shall be used as a plug in the test section

E. Water source connection and drainage and wind evacuation scheme should be done

BCDE