皮皮学,免费搜题
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【简答题】
(1)growth (2)positive (3) double (4)increasingly (5) computer According to U.S Bureau of Labor Statistics, the demand for workers in the fields of information technology (IT), medical and fitness is expected to in the future. Thanks to technological advance, the field of technology grow fastest in recent years and the trend will continue for some time. Another guareeteed is in the medical field because of the ageing of the population and development of medical treatment . As people become health conscious, the fitness field is also expected to expand in the next decade. In order to choose a suitable job, you should firstly identify future career trends, but most importantly assess your own skills, abilities, personal qualities and interests. As to the sccussful career, eduaction and training is a must, but communicative skills, mental attitude and abilities to get along with people are the top requisites.
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举一反三
【简答题】什么是纺丝成形?
【单选题】容量瓶刻度不准引起的误差是( )
A.
方法误差
B.
仪器误差
C.
试剂误差
D.
标样误差
【判断题】酸浴在酸浴槽内是否分配均匀对纺丝成形有较大的影响。
A.
正确
B.
错误
【单选题】生产中要使纤维成形,首先要求把纺丝流体从喷丝孔道中挤出,使之形成细流,因纺丝流体的黏弹性和挤出条件的不同,挤出细流的类型可分为以下四种,其中()是纺丝中希望出现的类型。
A.
液滴型(挤出成不连续液滴)
B.
漫流型(出喷丝孔沿板面漫流,细流不稳定)
C.
胀大型(出喷丝口细流胀大)
D.
破裂型(纺丝流体中出现不稳定流动)
【单选题】参与纺锤丝形成的细胞器是()
A.
内质网
B.
线粒体
C.
高尔基体
D.
微管
E.
核糖体
【单选题】软驱数据线端口的针数是()
A.
34
B.
40
C.
68
D.
80
【单选题】参与纺锤丝形成的细胞器是()
A.
内质网
B.
线粒体
C.
高尔基体
D.
微管
【简答题】羟基脲能抑制_______________,阻止胞苷酸转变为脱氧胞苷酸,从而抑制DNA的合成。用于_______________,主要不良反应为_______________。
【单选题】参与纺锤丝的形成的细胞器是( )
A.
内质网
B.
线粒体
C.
高尔基体
D.
微管
E.
糖体
【单选题】酮体的生成需要下列那一组维生素参与?
A.
维生素B1、B2
B.
维生素B6 、B12
C.
尼克酰胺和遍多酸
D.
叶酸和B 12
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