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【单选题】
钢筋探测仪的复位操作，描述错误的是（ ）。A.
将探头拿到空气中，远离金属（至少距离金属 0.5m ）
B.
在厚度测试、直径测试和钢筋扫描界面，按下确定键进行复位操作，消除环境引入的影响
C.
约 3 秒钟后，屏幕上 wait ！消失后，复位操作结束。此时可以进入正常检测状态，如果周围有较强的电磁场干扰，复位时间可能会稍长
D.
靠近钢筋的位置进行复位操作，不会导致检测结果严重失真
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