以下那一项故障不是由于液压动力转向系统渗入空气引起的故障的是()
A.转向沉重
B.前轮摆动
C.转向油泵产生的噪声
D.转向发漂
参考答案:B
用所给单词的适当形式填空。
1. Teacher's smiles _____ (courage ) us; mother's smiles warm us.
2. It is _____ ( possible) to improve our English without enough practice.
3. The boy was so _____ ( worry) that he couldn't find his parents.
4. Sandy was _____ ( happy) because she failed in the maths exam yesterday.
5. My mother always tries to make sure we eat _____ (healthy) .
6. We had a very _____ (enjoy) travel for ever.
7. It's _____ ( fool) of Peter to pay so much money for clothes.
8. You should listen to your teacher _____ (careful).
9. They treasure their _____ (friend) of more than ten years.
10. Sports and art activities make our school life _____ (color) .
承销拟公开发行证券的公司票面总值超过( )的,证券经营机构应当组成承销团进行承销。
A.人民币1000万元 B.人民币8000万元C.人民币5000万元 D.人民币10000万元