经纬仪在测水平角中，取盘左、盘右观测的平均值可以抵消LL不垂直于VV的误差。
参考答案：错
On arriving home, she was surprised to find that the kitchen was filled with _______ smelled liked tasty dishes.
A．which
B．it
C．that
D．what
接触化学毒物人员要保证蔬菜水果的摄入量，其目的是（）
A、增加肌体解毒功能
B、促进毒物排出
C、提供蛋白质
D、提供脂肪
