监控中心能保存告警数据、操作数据和监测数据至少()。
参考答案:一年
具有调理脾胃,益气和营功效的虚证类非处方中成药是
A.五子衍宗丸
B.参芪五味子片
C.桂附地黄丸
D.大补阴丸
E.薯蓣丸
You want to know what the safest place for children 77.______is in the car The experts say the back seat is the safest for 78.______them. The back seat is farthest away off the force of a head- 79.______on collision(迎头撞击), which can lead serious injuries. 80.______If your child is below 8 and weighs no more than 85 81.______pounds, it is necessarily to fit your car with a safety seat. 82.______Moreover, the safety seat must be held in place of on the83.______car’s back seat. If your child do need your attention while 84.______you driving, don’t look back with only one hand on the 85.______wheel. You’d better stop the car. 86.______