以下是一个使用Apps Script在Google Doc中查找两个标题/书签之间的图像的示例代码：

function findImagesBetweenHeadings() {
  var doc = DocumentApp.getActiveDocument();
  var body = doc.getBody();
  var images = [];
  var startHeading = body.getHeading1Paragraphs()[0]; // 起始标题
  var endHeading = body.getHeading1Paragraphs()[1]; // 终止标题
  
  // 获取起始标题和终止标题之间的所有段落
  var paragraphs = body.getParagraphs();
  var startIndex = paragraphs.indexOf(startHeading.getParent());
  var endIndex = paragraphs.indexOf(endHeading.getParent());
  var paragraphsBetweenHeadings = paragraphs.slice(startIndex + 1, endIndex);
  
  // 查找段落中的图像
  paragraphsBetweenHeadings.forEach(function(paragraph) {
    var elements = paragraph.getNumChildren();
    for (var i = 0; i < elements; i++) {
      var element = paragraph.getChild(i);
      if (element.getType() == DocumentApp.ElementType.INLINE_IMAGE) {
        images.push(element);
      }
    }
  });
  
  // 打印找到的图像URL
  images.forEach(function(image) {
    Logger.log(image.getAs('image/png').copyBlob().getBlob().getUrl());
  });
}

请确保将此代码添加到Google Docs中的脚本编辑器中，并在运行之前将起始标题和终止标题替换为您的实际标题。运行findImagesBetweenHeadings函数后，将在Logs中记录所有找到的图像的URL。