在经济发展阶段,企业既是债券的供给者,又是债券的需求者,所以这个阶段的债券价格变动方向很难确定。
参考答案:错
Knowing office rules, whether ______ or not, is always of great importance, especially for young
job seekers.[ ]
A. written
B. writing
C. being written
D. having been written
热工制度中的基本参数是()、()、()、()、及供热比例分配。