【单选题】有一多肽经酸水解后产生等摩尔的Lys,Gly和Ala。如用胰蛋白酶水解该肽,仅发现有游离的Gly和一种二肽。下列多肽的一级结构中,哪一个符合该肽的结构?()
A.
Gly-Lys-Ala-Lys-Gly-Ala
【简答题】翻译下列句子,注意主从句换位。 Unlike many other industrialized countries, the United States is largely self-sufficient in raw mateirals. Japan and Western Europe, which depend heavily on food imported from the Unit...
【单选题】为增大扭矩,汽车起动机通常采用( )个磁极。
【判断题】为增大磁场强度,大多数起动机采用4个磁极, 在其上面装有磁场线圈,相对的是同极,相邻的是异极。
【简答题】Listen to the following sentences and interpret them into Chinese, paying attention to the translation of attributive clauses. 原文: (1) The Kyoto Protocol created the “Clean Development Mechanism” or C...
【单选题】Unaltered folk cultures no longer exist in industrialized countries such as the United States and Canada. Perhaps the nearest modern equivalent in Anglo-America is the Amish, a German American farming...