1.2 hoisting 1.2.1 tower crane, large lifting equipment and steel wire rope shall be used as lifting tools to fix the lifting lock. Introduction the construction of prefabricated buildings in
2) Installation area proportion for double slope roof, only the south slope is suitable for installation, which is about 50% of the roof area; For the four slope roof, the
Source: Notice of snow region breeze recommending the time of national unified legal vocational qualification examination in Tibet Autonomous Region in 2021. As a manager of a public institution, Zhang