{
  "id": "S217",
  "type": "单选题",
  "type_code": "single",
  "stem": "某抽样设计方案的效率高于简单随机抽样，此时的抽样设计效应应该为（ ）",
  "stem_text": "某抽样设计方案的效率高于简单随机抽样，此时的抽样设计效应应该为（ ）",
  "options": [
    {
      "key": "A",
      "text": "小于1"
    },
    {
      "key": "B",
      "text": "等于1"
    },
    {
      "key": "C",
      "text": "大于1"
    },
    {
      "key": "D",
      "text": "大于0"
    }
  ],
  "options_text": [
    {
      "key": "A",
      "text": "小于1"
    },
    {
      "key": "B",
      "text": "等于1"
    },
    {
      "key": "C",
      "text": "大于1"
    },
    {
      "key": "D",
      "text": "大于0"
    }
  ],
  "answer_keys": [
    "A"
  ],
  "answer_display": "A",
  "answer_texts": [
    "小于1"
  ],
  "sources": [
    {
      "edition": "第15届",
      "edition_num": 15,
      "no": 49,
      "uid": "15-049",
      "file": "第15届市调大赛本科组模拟题1.docx"
    }
  ],
  "source_display": "第15届 第49题",
  "source_count": 1,
  "images": [],
  "warnings": [],
  "conflict": null,
  "url": "/q/S217.html"
}