不定项选择

DNA分子在聚丙烯酰胺凝胶电泳中泳动的速度取决于片段的大小。

A．正确
B．错误

相关考题

What does the phrase "mind set" mean?A．思维定式 B．思想碰撞 C．心不...

单项选择题What does the phrase "mind set" mean?

A．思维定式
B．思想碰撞
C．心不在焉
D．思维闭塞

Is intrinsic resistance defined as?A．the resistance exh...

单项选择题Is intrinsic resistance defined as?

A．the resistance exhibited due to the inherent properties of the bacterium
B．Bacteria acquire resistance genes from outside
C．Drug resistance caused by abuse of antibiotics
D．Drug resistance acquired by bacteria during transmission

影响客房定价的首要因素( )。 A. 定价目标 ...

单项选择题影响客房定价的首要因素( )。 A.
定价目标 B.
成本水平 C.
酒店地理位置 D.
酒店服务质量

All Rights Reserved 版权所有©牛牛题库网(nntiku.com)

备案号：湘ICP备2022003000号-1