成型地铁隧道验收规范规定：隧道平面允许偏差（）mm，高程允许偏差（）mm
A．±50，±25
B．±25，±25
C．±100，±100
参考答案：C
Not only her mother but also her father _____ in the same school for twenty years. [ ]
A. will teach
B. has taught
C. have taught
D. is teaching
某药经口服连续给药，剂量为0.3mg/kg，按t1/2间隔给药，欲立即达到稳态浓度，首剂为（）
A．0.3mg／kg
B．0.6mg／kg
C．1.2mg／kg
D．1.5mg／kg
E．1.8mg／kg
