题目内容

测量工作中经常会遇到这种情况，一个观测结果同时受到许多独立误差的联合影响，如照准误差、读数误差、目标偏心误差和仪器偏心误差对测角的影响。在这种情况下，观测结果的真误差是各个独立误差的代数和。

A. 对
B. 错

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The girl with _ umbrella in hand is studying in _ university.

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