车钩缓冲停止器是跨装运输时的加固装置,下列说法正确的是( ).

车钩缓冲停止器是跨装运输时的加固装置，下列说法正确的是（ ）。 A.跨装车组使用车钩缓冲停止器，不加挂中间游车时，不得小于180mm B.跨装车组使用车钩缓冲停止器，加挂中间游车时，不得小于300mm C.跨装车组不使用车钩缓冲停止器，也不加挂中间游车时，不得小于300mm D.在车钩自然状态下，将车钩缓冲停止器安装在货车冲击座和车钩钩头背之间。 答案:ABCD Answer: ABCD Explanation: The question discusses the "车钩缓冲停止器" (coupler buffer stopper), which is an essential reinforcement device for cross-loading transportation. The correct statements are as follows: A. When using the coupler buffer stopper for cross-loading transportation, without attaching intermediate cars, the distance should not be less than 180mm. B. When using the coupler buffer stopper for cross-loading transportation, with intermediate cars attached, the distance should not be less than 300mm. C. When not using the coupler buffer stopper for cross-loading transportation and not attaching intermediate cars, the distance should not be less than 300mm. D. The coupler buffer stopper should be installed between the freight car impact seat and the back of the coupler head in its natural state. Please note that these answers and explanations are based on the information provided in the questions and may not cover all possible scenarios related to the topics.