在利用GPS卫星导航仪进行定位导航时，精度几何因子GDOP是（）。
A．大好
B．小好
C．多好
D．少好
参考答案：B
He accidentally_______ he had quarreled with his wife and that he hadn't been home for a couple
of weeks. [ ]
A. let out
B. took care
C. made sure
D. made out
10kV及以下架空线路（）跨越爆炸性气体环境。
A.不应
B.严禁
C.不可
D.可以
