协议签订后新增或拆除基站按实际巡检情况进行结算,超过15天的按1个月、15天内按半个月计算。()
参考答案:错
My mother is a kind woman, _____________?[ ]
A. is she
B. is he
C. isn't she
D. isn't he
蜗杆的径向圆跳动和轴向窜动对齿轮加工后的()和相邻两齿的()影响很大。