经批准的安全技术措施遇到因条件变化或者考虑不周需变更安全技术措施内容时，应经原编制、审批人员办理变更手续，否则不能擅自变更。( )
参考答案：对
There are fifty students in my class. Thirty students are girls, ________ are boys.[ ]
A. the other
B. others
C. the others
D. other
什么是出版资源？它有哪些特点？
