皮皮学，免费搜题
登录
搜题
【单选题】
在不同类型的水文测站中,一旦建立应尽量保持相对稳定,在规定的时期内连续观测的是A.
实验站
B.
基本站
C.
专用站
D.
辅助站
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】Translate the following into Chinese Not all polymers are built up from bonding together a single kind of repeating unit. At the other extreme , protein molecules are polyamides in which n amino acid ...
【简答题】It was through John ________ I got to
know Mike a few years ago.A. who B. whom C. how D. that
【单选题】Found in the chromatin of all eukaryotic cells, histones have molecular weights between 11,000 and 21,000 and are very rich in the basic amino acids arginine and lysine which together make up about __...
A.
1/6
B.
1/5
C.
1/4
D.
1/3
【简答题】words test 一、填空题 1、 He has a special feeling for the brilliant birds,and each spring he eagerly ______ their return. Thanks to the ______ of air transport,everyone is free to go to anywhere at any tim...
【单选题】All eukaryotic cells have five major classes of histones, differing in molecular weight and amino acid composition. They are:
A.
H1, H2, H3, H4 and H5
B.
H1A, H1B, H3, H4, and H5
C.
H1 , H2A, H2B, H3, and H4
D.
H1 , H2, H3A, H3B, and H4
【判断题】John Deere established a reputation for building dependable farm tractors. When the company began to build small yard tractors, it insisted on using the same logo on its small mowers as on its large t...
A.
正确
B.
错误
【单选题】It was through John ______ I got to know Mike a few years ago.
A.
who
B.
whom
C.
how
D.
that
相关题目：
参考解析：
知识点：
题目纠错 0
发布
