【Electrical Version】Daily Question 20180406
Thread Content
Fill in the blanks: The upper and lower parts of directly buried cables must be covered with a layer of soft soil or sand at a thickness of not less than (), which in turn must be covered with (). In addition, () must be installed in appropriate locations on the ground surface. Answer: 100mm protective plate marker post
100mm thick protective plate marker post
100mm, protective plate, marker post
The upper and lower parts of directly buried cables must be covered with a layer of soft soil or sand with a thickness of not less than 100 mm; a protective cover must be placed on top of it, and sign posts must be installed in appropriate locations on the ground surface
100mm, protective plate, marker post
100mm； Protection board ； marker post
100mm protective plate marker post
100mm, protective plate, marker post
100mm protective plate marker post
100mm, protective plate, marker post
100mm protective plate marker post