No. Absolutely not. A RAMMUS image contains drivers specific to the Pixelbook’s Intel Kaby Lake CPU, touchpad, and embedded controller. Flashing it to a Lenovo or Acer Chromebook will result in a brick.
Fix corrupted systems, remove unofficial software, or reinstall Chrome OS after a failed update. Step-by-Step: Download and Create the Rammus Recovery Image Chrome Os Download Recovery Image -rammus-
page also provides links to the recovery images for all active board names, including rammus. Why "Rammus"? Chrome OS Missing or Damaged TroubleShooting Guide remove unofficial software