The accounting items are divided into four categories of Asset' Liability, Joint Asset and Liability, Loss and IncomE.
A.Right.
B.Wrong.
C.Doesn't say.

单项选择题Ezra Pound played a role as a leading spokesman of ______in the history of Americ Movement

单项选择题大肠杆菌色氨酸操纵子转录是通过操纵区和阻遏蛋白控制的，当色氨酸供应不足时，阻遏物失了所结合的色氨酸，从操纵区上解离下来，trp操纵子的转录就此开始。这个系统是典型的负控诱导系统。A、对B、错