静不平衡是指旋转值（）长度的零件，其重心偏离了旋转轴线。A.大于 B.等于 C.小于

擅自填加着色剂、防腐剂、香料、矫味剂及辅料的（）

A．药品

B．新药

C．劣药

D．辅料

E．假药

下列不属于与原发性肝癌发生相关的致癌因素是（）

A.肝硬化

B.家族史

C.病毒性肝炎

D.黄曲霉素污染食物

E.刺激性食物

女婴8个月，因腹泻2d伴呕吐于7月15日入院。大便7～8次／日，蛋花汤样，略带腥臭，呕吐2～3次，1d来口干、尿少。患儿以牛奶喂养为主，家长卫生习惯差，乳具较少消毒。既往无腹泻史。体检：体温38℃，精神软，哭时泪少，前囟、眼窝凹陷，唇干，心、肺无特殊，腹软，肠鸣音活跃。大便常规：色黄，有黏液，白细胞数0～5／HP。

［假设信息］如该患儿同时伴Ⅰ度营养不良，前述方案应改为（）

A.总液量减少1／5，用4：3：2液

B.总液量减少1／3，用4：3：2液

C.总液量增加1／5，用2：3：1液

D.总液量减少1／3，用2：3：1液

E.总液量增加1／3，用2：3：1液

A Trip to the Forest

One day Bob took two of his friends into the mountains. They put up their tents and then rode off to a forest to see how the trees were growing.
In the afternoon when they were about ten kilometres from their camp, it started to snow. More and more snow fell. Soon Bob could hardly see his hands before his face. He could not find the road. Bob knew there were two roads. One road went to the camp, and the other went to his house. But all was white snow. Everything was the same. How could he take his friends back to the camp
Bob had an idea. The horses ! Let the horses take them back ! But what would happen if the horses took the road to his house That would be a trip of thirty-five kilometres in such cold weather!
It was getting late. They rode on and on. At last the horses stopped. Where were they None of them could tell. John looked around. What was that under the tree It was one of their tents!

The story happened ______.

A．on a cold winter day

B．on a dark snowy evening

C．in a cold camp far from villages

D．at night when nothing could be seen

机械铺轨，龙门架中心与线路中心偏差应（）。