( )是指项目内部各专业之间的“接口”,包括在专业交叉与衔接点上如何进行相互分工与协作等。
A.组织界面
B.人际关系界面
C.技术界面
D.管理界面
参考答案:C
As our country has realized the problem and taken some measures, the price of medicine has _____ and
poor people can also afford good medicine. [ ]
A. gone down
B. brought down
C. turned down
D. cut down
利用带电粒子在电场作甩下定向移动的特性,对混合物组分进行分离、纯化和测定的技术为
A.电泳技术B.电化学技术C.层析技术D.超速离心技术E.光谱技术