Isaacman also said the agency would halt work to develop a more powerful version of the SLS rocket's upper stage, known as the Exploration Upper Stage, or EUS. Instead, NASA will go forward with a "standardized," less powerful stage but one that will minimize major changes between flights and utilize the same launch gantry.
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Initially, I used Packer to generate a virtual machine image, which I would then clone onto the disk of the machine I wanted to configure. It worked very well for server templates, but for a dev machine, it was a bit of a patchwork solution. On top of that, I decided to look for a Packer alternative because of Hashicorp’s licensing changes (a decision I still struggle to accept!).，这一点在雷电模拟器官方版本下载中也有详细论述
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