{
  "id": "J007",
  "type": "判断题",
  "type_code": "judge",
  "stem": "系统抽样中当抽样间距正好与总体中变化的某种周期性一致时会形成系统偏差。",
  "stem_text": "系统抽样中当抽样间距正好与总体中变化的某种周期性一致时会形成系统偏差。",
  "options": [
    {
      "key": "A",
      "text": "对"
    },
    {
      "key": "B",
      "text": "错"
    }
  ],
  "options_text": [
    {
      "key": "A",
      "text": "对"
    },
    {
      "key": "B",
      "text": "错"
    }
  ],
  "answer_keys": [
    "A"
  ],
  "answer_display": "A",
  "answer_texts": [
    "对"
  ],
  "sources": [
    {
      "edition": "第12届",
      "edition_num": 12,
      "no": 81,
      "uid": "12-081",
      "file": "第12届本科模拟题（10.19）.xlsx"
    }
  ],
  "source_display": "第12届 第81题",
  "source_count": 1,
  "images": [],
  "warnings": [],
  "conflict": null,
  "url": "/q/J007.html"
}