劳动定额是企业劳动管理的一项基础工作。
参考答案：错
________ the students in this school is about three thousand, and ________ of them are girls. [ ]
A. A number of; two third
B. The number of; two thirds
C. A number of; two thirds
D. The number of; two third
循环码的生成多项式是非零码字中的最低次的（）
