【单选题】【消耗次数：1】
室内质控主要目的是评价实验室的（）
①
精密度
②
准确度
③
特异性
④
灵敏度
⑤
有效性
参考答案：
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相关题目
【单选题】
下列关于平行测定结果准确度与精密度的描述正确的有
①
精密度高则没有随机误差
②
精密度高则准确度一定高
③
精密度高表明方法的重现性好
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存在系统误差则精密度一定不高
【多选题】
某分析人员所测得的分析结果，精密度好，准确度差，可能是(?? ??)导致的
①
测定次数偏少
②
仪器未校正
③
选题择的指示剂不恰当
④
标定标准溶液用的基准物保存不当
随机题目
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_____ you work hard enough _____ you be able to get a PhD degree in three years.
①
Only if, will
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and to see
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【单选题】
幻灯片放映时，使光标变成“激光笔”效果，_______。
①
按Ctrl+F5
②
按Shift+F5
③
按住Ctrl键的同时，按住鼠标的左键
④
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