It is entirely possible that Mr. Durant simply approved the idea of constructing the bridge and not the design of the bridge or the contractor that built it.
Install the equipment before each subsystem of the products must be approved by the contractor, supervision inspection consent for installation, supervision plays a very important role.
安装设备前每一项子系统的产品必须经总包、监理方报验同意方能进行安装，监理起到至关重要的作用。
3
The contractor shall have a first class qualification on construction of the system, and shall obtain the qualification approved by the local authority, if necessary.