【单选题】创新 = 理论概念 + 技术发明 + ( )
【单选题】郑板桥的对联:“坐,请坐,请上座!茶,敬茶,敬香茶!”在礼仪规范上体现了
【单选题】根据色谱原理不同,色谱法主要有
E.
分配色谱、吸附色谱、离子交换色谱、凝胶滤过色谱
【单选题】根据色谱原理不同,色谱法主要有( D )
D.
分配色谱、吸附色谱、离子交换色谱、凝胶滤过色谱
【单选题】– What do you think of my sofa? -- Well, great! But don’t you think it will _____________ too much space?
【单选题】—Don’t you think it would be much more convenient to have our own car? —___________,but we don’t have enough money.