测量误差按其产生的原因和对测量结果影响性质的不同可分为( )。
A．人为误差
B．仪器误差
C．系统误差
D．粗差
E．偶然误差
参考答案：C,D,E
that they may eventually reduce the amount of labor needed on construction sites by 90 percent．
A．Such construction robots are clever
B．So clever the construction robots are
C．Such clever construction robots are
D．So clever are the construction robots
排除犯罪的事由
